// jslint.js
// 2010-11-27

/*
Copyright (c) 2002 Douglas Crockford  (www.JSLint.com)

Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
of the Software, and to permit persons to whom the Software is furnished to do
so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

The Software shall be used for Good, not Evil.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
*/

/*
    JSLINT is a global function. It takes two parameters.

        var myResult = JSLINT(source, option);

    The first parameter is either a string or an array of strings. If it is a
    string, it will be split on '\n' or '\r'. If it is an array of strings, it
    is assumed that each string represents one line. The source can be a
    JavaScript text, or HTML text, or a JSON text, or a CSS text.

    The second parameter is an optional object of options which control the
    operation of JSLINT. Most of the options are booleans: They are all are
    optional and have a default value of false.

    If it checks out, JSLINT returns true. Otherwise, it returns false.

    If false, you can inspect JSLINT.errors to find out the problems.
    JSLINT.errors is an array of objects containing these members:

    {
        line      : The line (relative to 0) at which the lint was found
        character : The character (relative to 0) at which the lint was found
        reason    : The problem
        evidence  : The text line in which the problem occurred
        raw       : The raw message before the details were inserted
        a         : The first detail
        b         : The second detail
        c         : The third detail
        d         : The fourth detail
    }

    If a fatal error was found, a null will be the last element of the
    JSLINT.errors array.

    You can request a Function Report, which shows all of the functions
    and the parameters and vars that they use. This can be used to find
    implied global variables and other problems. The report is in HTML and
    can be inserted in an HTML <body>.

        var myReport = JSLINT.report(limited);

    If limited is true, then the report will be limited to only errors.

    You can request a data structure which contains JSLint's results.

        var myData = JSLINT.data();

    It returns a structure with this form:

    {
        errors: [
            {
                line: NUMBER,
                character: NUMBER,
                reason: STRING,
                evidence: STRING
            }
        ],
        functions: [
            name: STRING,
            line: NUMBER,
            last: NUMBER,
            param: [
                STRING
            ],
            closure: [
                STRING
            ],
            var: [
                STRING
            ],
            exception: [
                STRING
            ],
            outer: [
                STRING
            ],
            unused: [
                STRING
            ],
            global: [
                STRING
            ],
            label: [
                STRING
            ]
        ],
        globals: [
            STRING
        ],
        member: {
            STRING: NUMBER
        },
        unuseds: [
            {
                name: STRING,
                line: NUMBER
            }
        ],
        implieds: [
            {
                name: STRING,
                line: NUMBER
            }
        ],
        urls: [
            STRING
        ],
        json: BOOLEAN
    }

    Empty arrays will not be included.

*/

/*jslint
    evil: true, nomen: false, onevar: false, regexp: false, strict: true
*/

/*members "\b", "\t", "\n", "\f", "\r", "!=", "!==", "\"", "%",
    "(begin)", "(breakage)", "(context)", "(error)", "(global)",
    "(identifier)", "(last)", "(line)", "(loopage)", "(name)", "(onevar)",
    "(params)", "(scope)", "(statement)", "(verb)", "*", "+", "++", "-",
    "--", "\/", "<", "<=", "==", "===", ">", ">=", ADSAFE,
    ActiveXObject, Array, Boolean, COM, CScript, Canvas, CustomAnimation,
    Date, Debug, E, Enumerator, Error, EvalError, FadeAnimation, Flash,
    FormField, Frame, Function, HotKey, Image, JSON, LN10, LN2, LOG10E,
    LOG2E, MAX_VALUE, MIN_VALUE, Math, MenuItem, MoveAnimation,
    NEGATIVE_INFINITY, Number, Object, Option, PI, POSITIVE_INFINITY, Point,
    RangeError, Rectangle, ReferenceError, RegExp, ResizeAnimation,
    RotateAnimation, SQRT1_2, SQRT2, ScrollBar, String, Style, SyntaxError,
    System, Text, TextArea, Timer, TypeError, URIError, URL, VBArray,
    WScript, Web, Window, XMLDOM, XMLHttpRequest, "\\", a, abbr, acronym,
    activeborder, activecaption, addEventListener, address, adsafe, alert,
    aliceblue, all, animator, antiquewhite, appleScript, applet, apply,
    approved, appworkspace, aqua, aquamarine, area, arguments, arity,
    article, aside, audio, autocomplete, azure, b, background,
    "background-attachment", "background-color", "background-image",
    "background-position", "background-repeat", base, bdo, beep, beige, big,
    bisque, bitwise, black, blanchedalmond, block, blockquote, blue,
    blueviolet, blur, body, border, "border-bottom", "border-bottom-color",
    "border-bottom-style", "border-bottom-width", "border-collapse",
    "border-color", "border-left", "border-left-color", "border-left-style",
    "border-left-width", "border-right", "border-right-color",
    "border-right-style", "border-right-width", "border-spacing",
    "border-style", "border-top", "border-top-color", "border-top-style",
    "border-top-width", "border-width", bottom, br, braille, brown, browser,
    burlywood, button, buttonface, buttonhighlight, buttonshadow,
    buttontext, bytesToUIString, c, cadetblue, call, callee, caller, canvas,
    cap, caption, "caption-side", captiontext, cases, center, charAt,
    charCodeAt, character, chartreuse, chocolate, chooseColor, chooseFile,
    chooseFolder, cite, clear, clearInterval, clearTimeout, clip, close,
    closeWidget, closed, closure, cm, code, col, colgroup, color, command,
    comment, condition, confirm, console, constructor, content,
    convertPathToHFS, convertPathToPlatform, coral, cornflowerblue,
    cornsilk, "counter-increment", "counter-reset", create, crimson, css,
    cursor, cyan, d, darkblue, darkcyan, darkgoldenrod, darkgray, darkgreen,
    darkkhaki, darkmagenta, darkolivegreen, darkorange, darkorchid, darkred,
    darksalmon, darkseagreen, darkslateblue, darkslategray, darkturquoise,
    darkviolet, data, datalist, dd, debug, decodeURI, decodeURIComponent,
    deeppink, deepskyblue, defaultStatus, defineClass, del, deserialize,
    details, devel, dfn, dialog, dimension, dimgray, dir, direction,
    display, div, dl, document, dodgerblue, dt, edition, else, em, embed,
    embossed, empty, "empty-cells", encodeURI, encodeURIComponent,
    entityify, eqeqeq, errors, es5, escape, eval, event, evidence, evil, ex,
    exception, exec, exps, fieldset, figure, filesystem, firebrick, first,
    float, floor, floralwhite, focus, focusWidget, font, "font-family",
    "font-size", "font-size-adjust", "font-stretch", "font-style",
    "font-variant", "font-weight", footer, forestgreen, forin, form,
    fragment, frame, frames, frameset, from, fromCharCode, fuchsia, fud,
    funct, function, functions, g, gainsboro, gc, getComputedStyle,
    ghostwhite, global, globals, gold, goldenrod, gray, graytext, green,
    greenyellow, h1, h2, h3, h4, h5, h6, handheld, hasOwnProperty, head,
    header, height, help, hgroup, highlight, highlighttext, history,
    honeydew, hotpink, hr, "hta:application", html, i, iTunes, id,
    identifier, iframe, img, immed, implieds, in, inactiveborder,
    inactivecaption, inactivecaptiontext, include, indent, indexOf,
    indianred, indigo, infobackground, infotext, init, input, ins, isAlpha,
    isApplicationRunning, isDigit, isFinite, isNaN, ivory, join, jslint,
    json, kbd, keygen, khaki, konfabulatorVersion, label, labelled, lang,
    last, lavender, lavenderblush, lawngreen, laxbreak, lbp, led, left,
    legend, lemonchiffon, length, "letter-spacing", li, lib, lightblue,
    lightcoral, lightcyan, lightgoldenrodyellow, lightgreen, lightpink,
    lightsalmon, lightseagreen, lightskyblue, lightslategray,
    lightsteelblue, lightyellow, lime, limegreen, line, "line-height",
    linen, link, "list-style", "list-style-image", "list-style-position",
    "list-style-type", load, loadClass, location, log, m, magenta, map,
    margin, "margin-bottom", "margin-left", "margin-right", "margin-top",
    mark, "marker-offset", maroon, match, "max-height", "max-width", maxerr,
    maxlen, md5, mediumaquamarine, mediumblue, mediumorchid, mediumpurple,
    mediumseagreen, mediumslateblue, mediumspringgreen, mediumturquoise,
    mediumvioletred, member, menu, menutext, message, meta, meter,
    midnightblue, "min-height", "min-width", mintcream, mistyrose, mm,
    moccasin, moveBy, moveTo, name, nav, navajowhite, navigator, navy, new,
    newcap, noframes, nomen, noscript, nud, object, ol, oldlace, olive,
    olivedrab, on, onbeforeunload, onblur, onerror, onevar, onfocus, onload,
    onresize, onunload, opacity, open, openURL, opener, opera, optgroup,
    option, orange, orangered, orchid, outer, outline, "outline-color",
    "outline-style", "outline-width", output, overflow, "overflow-x",
    "overflow-y", p, padding, "padding-bottom", "padding-left",
    "padding-right", "padding-top", "page-break-after", "page-break-before",
    palegoldenrod, palegreen, paleturquoise, palevioletred, papayawhip,
    param, parent, parseFloat, parseInt, passfail, pc, peachpuff, peru,
    pink, play, plum, plusplus, pop, popupMenu, position, powderblue, pre,
    predef, preferenceGroups, preferences, print, progress, projection,
    prompt, prototype, pt, purple, push, px, q, quit, quotes, random, range,
    raw, reach, readFile, readUrl, reason, red, regexp, reloadWidget,
    removeEventListener, replace, report, reserved, resizeBy, resizeTo,
    resolvePath, resumeUpdates, rhino, right, rosybrown, royalblue, rp, rt,
    ruby, runCommand, runCommandInBg, saddlebrown, safe, salmon, samp,
    sandybrown, saveAs, savePreferences, screen, script, scroll, scrollBy,
    scrollTo, scrollbar, seagreen, seal, search, seashell, section, select,
    serialize, setInterval, setTimeout, shift, showWidgetPreferences,
    sienna, silver, skyblue, slateblue, slategray, sleep, slice, small,
    snow, sort, source, span, spawn, speak, speech, split, springgreen, src,
    stack, status, steelblue, strict, strong, style, styleproperty, sub,
    substr, sup, supplant, suppressUpdates, sync, system, table,
    "table-layout", tan, tbody, td, teal, tellWidget, test, "text-align",
    "text-decoration", "text-indent", "text-shadow", "text-transform",
    textarea, tfoot, th, thead, thistle, threeddarkshadow, threedface,
    threedhighlight, threedlightshadow, threedshadow, time, title,
    toLowerCase, toString, toUpperCase, toint32, token, tomato, top, tr, tt,
    tty, turquoise, tv, type, u, ul, undef, unescape, "unicode-bidi",
    unused, unwatch, updateNow, urls, value, valueOf, var, version,
    "vertical-align", video, violet, visibility, watch, wheat, white,
    "white-space", whitesmoke, widget, width, window, windowframe, windows,
    windowtext, "word-spacing", "word-wrap", yahooCheckLogin, yahooLogin,
    yahooLogout, yellow, yellowgreen, "z-index"
*/

// We build the application inside a function so that we produce only a single
// global variable. The function will be invoked, its return value is the JSLINT
// application itself.

var JSLINT = (function () {

    var adsafe_id,      // The widget's ADsafe id.
        adsafe_may,     // The widget may load approved scripts.
        adsafe_went,    // ADSAFE.go has been called.
        anonname,       // The guessed name for anonymous functions.
        approved,       // ADsafe approved urls.

// These are operators that should not be used with the ! operator.

        bang = {
            '<': true,
            '<=': true,
            '==': true,
            '===': true,
            '!==': true,
            '!=': true,
            '>': true,
            '>=': true,
            '+': true,
            '-': true,
            '*': true,
            '/': true,
            '%': true
        },

// These are members that should not be permitted in the safe subset.

        banned = {              // the member names that ADsafe prohibits.
            'arguments'     : true,
            callee          : true,
            caller          : true,
            constructor     : true,
            'eval'          : true,
            prototype       : true,
            stack           : true,
            unwatch         : true,
            valueOf         : true,
            watch           : true
        },


// These are the JSLint boolean options.

        boolOptions = {
            adsafe     : true, // if ADsafe should be enforced
            bitwise    : true, // if bitwise operators should not be allowed
            browser    : true, // if the standard browser globals should be predefined
            cap        : true, // if upper case HTML should be allowed
            css        : true, // if CSS workarounds should be tolerated
            debug      : true, // if debugger statements should be allowed
            devel      : true, // if logging should be allowed (console, alert, etc.)
            eqeqeq     : true, // if === should be required
            es5        : true, // if ES5 syntax should be allowed
            evil       : true, // if eval should be allowed
            forin      : true, // if for in statements must filter
            fragment   : true, // if HTML fragments should be allowed
            immed      : true, // if immediate invocations must be wrapped in parens
            laxbreak   : true, // if line breaks should not be checked
            newcap     : true, // if constructor names must be capitalized
            nomen      : true, // if names should be checked
            on         : true, // if HTML event handlers should be allowed
            onevar     : true, // if only one var statement per function should be allowed
            passfail   : true, // if the scan should stop on first error
            plusplus   : true, // if increment/decrement should not be allowed
            regexp     : true, // if the . should not be allowed in regexp literals
            rhino      : true, // if the Rhino environment globals should be predefined
            undef      : true, // if variables should be declared before used
            safe       : true, // if use of some browser features should be restricted
            windows    : true, // if MS Windows-specigic globals should be predefined
            strict     : true, // require the "use strict"; pragma
            sub        : true, // if all forms of subscript notation are tolerated
            white      : true, // if strict whitespace rules apply
            widget     : true  // if the Yahoo Widgets globals should be predefined
        },

// browser contains a set of global names which are commonly provided by a
// web browser environment.

        browser = {
            addEventListener: false,
            blur            : false,
            clearInterval   : false,
            clearTimeout    : false,
            close           : false,
            closed          : false,
            defaultStatus   : false,
            document        : false,
            event           : false,
            focus           : false,
            frames          : false,
            getComputedStyle: false,
            history         : false,
            Image           : false,
            length          : false,
            location        : false,
            moveBy          : false,
            moveTo          : false,
            name            : false,
            navigator       : false,
            onbeforeunload  : true,
            onblur          : true,
            onerror         : true,
            onfocus         : true,
            onload          : true,
            onresize        : true,
            onunload        : true,
            open            : false,
            opener          : false,
            Option          : false,
            parent          : false,
            print           : false,
            removeEventListener: false,
            resizeBy        : false,
            resizeTo        : false,
            screen          : false,
            scroll          : false,
            scrollBy        : false,
            scrollTo        : false,
            setInterval     : false,
            setTimeout      : false,
            status          : false,
            top             : false,
            XMLHttpRequest  : false
        },

        cssAttributeData,
        cssAny,

        cssColorData = {
            "aliceblue"             : true,
            "antiquewhite"          : true,
            "aqua"                  : true,
            "aquamarine"            : true,
            "azure"                 : true,
            "beige"                 : true,
            "bisque"                : true,
            "black"                 : true,
            "blanchedalmond"        : true,
            "blue"                  : true,
            "blueviolet"            : true,
            "brown"                 : true,
            "burlywood"             : true,
            "cadetblue"             : true,
            "chartreuse"            : true,
            "chocolate"             : true,
            "coral"                 : true,
            "cornflowerblue"        : true,
            "cornsilk"              : true,
            "crimson"               : true,
            "cyan"                  : true,
            "darkblue"              : true,
            "darkcyan"              : true,
            "darkgoldenrod"         : true,
            "darkgray"              : true,
            "darkgreen"             : true,
            "darkkhaki"             : true,
            "darkmagenta"           : true,
            "darkolivegreen"        : true,
            "darkorange"            : true,
            "darkorchid"            : true,
            "darkred"               : true,
            "darksalmon"            : true,
            "darkseagreen"          : true,
            "darkslateblue"         : true,
            "darkslategray"         : true,
            "darkturquoise"         : true,
            "darkviolet"            : true,
            "deeppink"              : true,
            "deepskyblue"           : true,
            "dimgray"               : true,
            "dodgerblue"            : true,
            "firebrick"             : true,
            "floralwhite"           : true,
            "forestgreen"           : true,
            "fuchsia"               : true,
            "gainsboro"             : true,
            "ghostwhite"            : true,
            "gold"                  : true,
            "goldenrod"             : true,
            "gray"                  : true,
            "green"                 : true,
            "greenyellow"           : true,
            "honeydew"              : true,
            "hotpink"               : true,
            "indianred"             : true,
            "indigo"                : true,
            "ivory"                 : true,
            "khaki"                 : true,
            "lavender"              : true,
            "lavenderblush"         : true,
            "lawngreen"             : true,
            "lemonchiffon"          : true,
            "lightblue"             : true,
            "lightcoral"            : true,
            "lightcyan"             : true,
            "lightgoldenrodyellow"  : true,
            "lightgreen"            : true,
            "lightpink"             : true,
            "lightsalmon"           : true,
            "lightseagreen"         : true,
            "lightskyblue"          : true,
            "lightslategray"        : true,
            "lightsteelblue"        : true,
            "lightyellow"           : true,
            "lime"                  : true,
            "limegreen"             : true,
            "linen"                 : true,
            "magenta"               : true,
            "maroon"                : true,
            "mediumaquamarine"      : true,
            "mediumblue"            : true,
            "mediumorchid"          : true,
            "mediumpurple"          : true,
            "mediumseagreen"        : true,
            "mediumslateblue"       : true,
            "mediumspringgreen"     : true,
            "mediumturquoise"       : true,
            "mediumvioletred"       : true,
            "midnightblue"          : true,
            "mintcream"             : true,
            "mistyrose"             : true,
            "moccasin"              : true,
            "navajowhite"           : true,
            "navy"                  : true,
            "oldlace"               : true,
            "olive"                 : true,
            "olivedrab"             : true,
            "orange"                : true,
            "orangered"             : true,
            "orchid"                : true,
            "palegoldenrod"         : true,
            "palegreen"             : true,
            "paleturquoise"         : true,
            "palevioletred"         : true,
            "papayawhip"            : true,
            "peachpuff"             : true,
            "peru"                  : true,
            "pink"                  : true,
            "plum"                  : true,
            "powderblue"            : true,
            "purple"                : true,
            "red"                   : true,
            "rosybrown"             : true,
            "royalblue"             : true,
            "saddlebrown"           : true,
            "salmon"                : true,
            "sandybrown"            : true,
            "seagreen"              : true,
            "seashell"              : true,
            "sienna"                : true,
            "silver"                : true,
            "skyblue"               : true,
            "slateblue"             : true,
            "slategray"             : true,
            "snow"                  : true,
            "springgreen"           : true,
            "steelblue"             : true,
            "tan"                   : true,
            "teal"                  : true,
            "thistle"               : true,
            "tomato"                : true,
            "turquoise"             : true,
            "violet"                : true,
            "wheat"                 : true,
            "white"                 : true,
            "whitesmoke"            : true,
            "yellow"                : true,
            "yellowgreen"           : true,

            "activeborder"          : true,
            "activecaption"         : true,
            "appworkspace"          : true,
            "background"            : true,
            "buttonface"            : true,
            "buttonhighlight"       : true,
            "buttonshadow"          : true,
            "buttontext"            : true,
            "captiontext"           : true,
            "graytext"              : true,
            "highlight"             : true,
            "highlighttext"         : true,
            "inactiveborder"        : true,
            "inactivecaption"       : true,
            "inactivecaptiontext"   : true,
            "infobackground"        : true,
            "infotext"              : true,
            "menu"                  : true,
            "menutext"              : true,
            "scrollbar"             : true,
            "threeddarkshadow"      : true,
            "threedface"            : true,
            "threedhighlight"       : true,
            "threedlightshadow"     : true,
            "threedshadow"          : true,
            "window"                : true,
            "windowframe"           : true,
            "windowtext"            : true
        },

        cssBorderStyle,
        cssBreak,

        cssLengthData = {
            '%': true,
            'cm': true,
            'em': true,
            'ex': true,
            'in': true,
            'mm': true,
            'pc': true,
            'pt': true,
            'px': true
        },

        cssMedia,
        cssOverflow,

        devel = {
            alert           : false,
            confirm         : false,
            console         : false,
            Debug           : false,
            opera           : false,
            prompt          : false
        },

        escapes = {
            '\b': '\\b',
            '\t': '\\t',
            '\n': '\\n',
            '\f': '\\f',
            '\r': '\\r',
            '"' : '\\"',
            '/' : '\\/',
            '\\': '\\\\'
        },

        funct,          // The current function

        functionicity = [
            'closure', 'exception', 'global', 'label',
            'outer', 'unused', 'var'
        ],

        functions,      // All of the functions

        global,         // The global scope
        htmltag = {
            a:        {},
            abbr:     {},
            acronym:  {},
            address:  {},
            applet:   {},
            area:     {empty: true, parent: ' map '},
            article:  {},
            aside:    {},
            audio:    {},
            b:        {},
            base:     {empty: true, parent: ' head '},
            bdo:      {},
            big:      {},
            blockquote: {},
            body:     {parent: ' html noframes '},
            br:       {empty: true},
            button:   {},
            canvas:   {parent: ' body p div th td '},
            caption:  {parent: ' table '},
            center:   {},
            cite:     {},
            code:     {},
            col:      {empty: true, parent: ' table colgroup '},
            colgroup: {parent: ' table '},
            command:  {parent: ' menu '},
            datalist: {},
            dd:       {parent: ' dl '},
            del:      {},
            details:  {},
            dialog:   {},
            dfn:      {},
            dir:      {},
            div:      {},
            dl:       {},
            dt:       {parent: ' dl '},
            em:       {},
            embed:    {},
            fieldset: {},
            figure:   {},
            font:     {},
            footer:   {},
            form:     {},
            frame:    {empty: true, parent: ' frameset '},
            frameset: {parent: ' html frameset '},
            h1:       {},
            h2:       {},
            h3:       {},
            h4:       {},
            h5:       {},
            h6:       {},
            head:     {parent: ' html '},
            header:   {},
            hgroup:   {},
            hr:       {empty: true},
            'hta:application':
                      {empty: true, parent: ' head '},
            html:     {parent: '*'},
            i:        {},
            iframe:   {},
            img:      {empty: true},
            input:    {empty: true},
            ins:      {},
            kbd:      {},
            keygen:   {},
            label:    {},
            legend:   {parent: ' details fieldset figure '},
            li:       {parent: ' dir menu ol ul '},
            link:     {empty: true, parent: ' head '},
            map:      {},
            mark:     {},
            menu:     {},
            meta:     {empty: true, parent: ' head noframes noscript '},
            meter:    {},
            nav:      {},
            noframes: {parent: ' html body '},
            noscript: {parent: ' body head noframes '},
            object:   {},
            ol:       {},
            optgroup: {parent: ' select '},
            option:   {parent: ' optgroup select '},
            output:   {},
            p:        {},
            param:    {empty: true, parent: ' applet object '},
            pre:      {},
            progress: {},
            q:        {},
            rp:       {},
            rt:       {},
            ruby:     {},
            samp:     {},
            script:   {empty: true, parent: ' body div frame head iframe p pre span '},
            section:  {},
            select:   {},
            small:    {},
            span:     {},
            source:   {},
            strong:   {},
            style:    {parent: ' head ', empty: true},
            sub:      {},
            sup:      {},
            table:    {},
            tbody:    {parent: ' table '},
            td:       {parent: ' tr '},
            textarea: {},
            tfoot:    {parent: ' table '},
            th:       {parent: ' tr '},
            thead:    {parent: ' table '},
            time:     {},
            title:    {parent: ' head '},
            tr:       {parent: ' table tbody thead tfoot '},
            tt:       {},
            u:        {},
            ul:       {},
            'var':    {},
            video:    {}
        },

        ids,            // HTML ids
        implied,        // Implied globals
        inblock,
        indent,
        jsonmode,
        lines,
        lookahead,
        member,
        membersOnly,
        nexttoken,
        noreach,
        option,
        predefined,     // Global variables defined by option
        prereg,
        prevtoken,

        rhino = {
            defineClass : false,
            deserialize : false,
            gc          : false,
            help        : false,
            load        : false,
            loadClass   : false,
            print       : false,
            quit        : false,
            readFile    : false,
            readUrl     : false,
            runCommand  : false,
            seal        : false,
            serialize   : false,
            spawn       : false,
            sync        : false,
            toint32     : false,
            version     : false
        },

        scope,      // The current scope
        src,
        stack,

// standard contains the global names that are provided by the
// ECMAScript standard.

        standard = {
            Array               : false,
            Boolean             : false,
            Date                : false,
            decodeURI           : false,
            decodeURIComponent  : false,
            encodeURI           : false,
            encodeURIComponent  : false,
            Error               : false,
            'eval'              : false,
            EvalError           : false,
            Function            : false,
            hasOwnProperty      : false,
            isFinite            : false,
            isNaN               : false,
            JSON                : false,
            Math                : false,
            Number              : false,
            Object              : false,
            parseInt            : false,
            parseFloat          : false,
            RangeError          : false,
            ReferenceError      : false,
            RegExp              : false,
            String              : false,
            SyntaxError         : false,
            TypeError           : false,
            URIError            : false
        },

        standard_member = {
            E                   : true,
            LN2                 : true,
            LN10                : true,
            LOG2E               : true,
            LOG10E              : true,
            MAX_VALUE           : true,
            MIN_VALUE           : true,
            NEGATIVE_INFINITY   : true,
            PI                  : true,
            POSITIVE_INFINITY   : true,
            SQRT1_2             : true,
            SQRT2               : true
        },

        strict_mode,
        syntax = {},
        tab,
        token,
        urls,
        warnings,

// widget contains the global names which are provided to a Yahoo
// (fna Konfabulator) widget.

        widget = {
            alert                   : true,
            animator                : true,
            appleScript             : true,
            beep                    : true,
            bytesToUIString         : true,
            Canvas                  : true,
            chooseColor             : true,
            chooseFile              : true,
            chooseFolder            : true,
            closeWidget             : true,
            COM                     : true,
            convertPathToHFS        : true,
            convertPathToPlatform   : true,
            CustomAnimation         : true,
            escape                  : true,
            FadeAnimation           : true,
            filesystem              : true,
            Flash                   : true,
            focusWidget             : true,
            form                    : true,
            FormField               : true,
            Frame                   : true,
            HotKey                  : true,
            Image                   : true,
            include                 : true,
            isApplicationRunning    : true,
            iTunes                  : true,
            konfabulatorVersion     : true,
            log                     : true,
            md5                     : true,
            MenuItem                : true,
            MoveAnimation           : true,
            openURL                 : true,
            play                    : true,
            Point                   : true,
            popupMenu               : true,
            preferenceGroups        : true,
            preferences             : true,
            print                   : true,
            prompt                  : true,
            random                  : true,
            Rectangle               : true,
            reloadWidget            : true,
            ResizeAnimation         : true,
            resolvePath             : true,
            resumeUpdates           : true,
            RotateAnimation         : true,
            runCommand              : true,
            runCommandInBg          : true,
            saveAs                  : true,
            savePreferences         : true,
            screen                  : true,
            ScrollBar               : true,
            showWidgetPreferences   : true,
            sleep                   : true,
            speak                   : true,
            Style                   : true,
            suppressUpdates         : true,
            system                  : true,
            tellWidget              : true,
            Text                    : true,
            TextArea                : true,
            Timer                   : true,
            unescape                : true,
            updateNow               : true,
            URL                     : true,
            Web                     : true,
            widget                  : true,
            Window                  : true,
            XMLDOM                  : true,
            XMLHttpRequest          : true,
            yahooCheckLogin         : true,
            yahooLogin              : true,
            yahooLogout             : true
        },

        windows = {
            ActiveXObject: false,
            CScript      : false,
            Debug        : false,
            Enumerator   : false,
            System       : false,
            VBArray      : false,
            WScript      : false
        },

//  xmode is used to adapt to the exceptions in html parsing.
//  It can have these states:
//      false   .js script file
//      html
//      outer
//      script
//      style
//      scriptstring
//      styleproperty

        xmode,
        xquote,

// Regular expressions. Some of these are ridiculously long.

// unsafe comment or string
        ax = /@cc|<\/?|script|\]\s*\]|<\s*!|&lt/i,
// unsafe characters that are silently deleted by one or more browsers
        cx = /[\u0000-\u001f\u007f-\u009f\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/,
// token
        tx = /^\s*([(){}\[.,:;'"~\?\]#@]|==?=?|\/(\*(jslint|members?|global)?|=|\/)?|\*[\/=]?|\+(?:=|\++)?|-(?:=|-+)?|%=?|&[&=]?|\|[|=]?|>>?>?=?|<([\/=!]|\!(\[|--)?|<=?)?|\^=?|\!=?=?|[a-zA-Z_$][a-zA-Z0-9_$]*|[0-9]+([xX][0-9a-fA-F]+|\.[0-9]*)?([eE][+\-]?[0-9]+)?)/,
// html token
        hx = /^\s*(['"=>\/&#]|<(?:\/|\!(?:--)?)?|[a-zA-Z][a-zA-Z0-9_\-:]*|[0-9]+|--)/,
// characters in strings that need escapement
        nx = /[\u0000-\u001f&<"\/\\\u007f-\u009f\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/,
        nxg = /[\u0000-\u001f&<"\/\\\u007f-\u009f\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g,
// outer html token
        ox = /[>&]|<[\/!]?|--/,
// star slash
        lx = /\*\/|\/\*/,
// identifier
        ix = /^([a-zA-Z_$][a-zA-Z0-9_$]*)$/,
// javascript url
        jx = /^(?:javascript|jscript|ecmascript|vbscript|mocha|livescript)\s*:/i,
// url badness
        ux = /&|\+|\u00AD|\.\.|\/\*|%[^;]|base64|url|expression|data|mailto/i,
// style
        sx = /^\s*([{:#%.=,>+\[\]@()"';]|\*=?|\$=|\|=|\^=|~=|[a-zA-Z_][a-zA-Z0-9_\-]*|[0-9]+|<\/|\/\*)/,
        ssx = /^\s*([@#!"'};:\-%.=,+\[\]()*_]|[a-zA-Z][a-zA-Z0-9._\-]*|\/\*?|\d+(?:\.\d+)?|<\/)/,
// attributes characters
        qx = /[^a-zA-Z0-9+\-_\/ ]/,
// query characters for ids
        dx = /[\[\]\/\\"'*<>.&:(){}+=#]/,

        rx = {
            outer: hx,
            html: hx,
            style: sx,
            styleproperty: ssx
        };

    function F() {}

    if (typeof Object.create !== 'function') {
        Object.create = function (o) {
            F.prototype = o;
            return new F();
        };
    }


    function is_own(object, name) {
        return Object.prototype.hasOwnProperty.call(object, name);
    }


    function combine(t, o) {
        var n;
        for (n in o) {
            if (is_own(o, n)) {
                t[n] = o[n];
            }
        }
    }

    String.prototype.entityify = function () {
        return this
            .replace(/&/g, '&amp;')
            .replace(/</g, '&lt;')
            .replace(/>/g, '&gt;');
    };

    String.prototype.isAlpha = function () {
        return (this >= 'a' && this <= 'z\uffff') ||
            (this >= 'A' && this <= 'Z\uffff');
    };


    String.prototype.isDigit = function () {
        return (this >= '0' && this <= '9');
    };


    String.prototype.supplant = function (o) {
        return this.replace(/\{([^{}]*)\}/g, function (a, b) {
            var r = o[b];
            return typeof r === 'string' || typeof r === 'number' ? r : a;
        });
    };

    String.prototype.name = function () {

// If the string looks like an identifier, then we can return it as is.
// If the string contains no control characters, no quote characters, and no
// backslash characters, then we can simply slap some quotes around it.
// Otherwise we must also replace the offending characters with safe
// sequences.

        if (ix.test(this)) {
            return this;
        }
        if (nx.test(this)) {
            return '"' + this.replace(nxg, function (a) {
                var c = escapes[a];
                if (c) {
                    return c;
                }
                return '\\u' + ('0000' + a.charCodeAt().toString(16)).slice(-4);
            }) + '"';
        }
        return '"' + this + '"';
    };


    function assume() {
        if (!option.safe) {
            if (option.rhino) {
                combine(predefined, rhino);
            }
            if (option.devel) {
                combine(predefined, devel);
            }
            if (option.browser) {
                combine(predefined, browser);
            }
            if (option.windows) {
                combine(predefined, windows);
            }
            if (option.widget) {
                combine(predefined, widget);
            }
        }
    }


// Produce an error warning.

    function quit(m, l, ch) {
        throw {
            name: 'JSLintError',
            line: l,
            character: ch,
            message: m + " (" + Math.floor((l / lines.length) * 100) +
                    "% scanned)."
        };
    }

    function warning(m, t, a, b, c, d) {
        var ch, l, w;
        t = t || nexttoken;
        if (t.id === '(end)') {  // `~
            t = token;
        }
        l = t.line || 0;
        ch = t.from || 0;
        w = {
            id: '(error)',
            raw: m,
            evidence: lines[l - 1] || '',
            line: l,
            character: ch,
            a: a,
            b: b,
            c: c,
            d: d
        };
        w.reason = m.supplant(w);
        JSLINT.errors.push(w);
        if (option.passfail) {
            quit('Stopping. ', l, ch);
        }
        warnings += 1;
        if (warnings >= option.maxerr) {
            quit("Too many errors.", l, ch);
        }
        return w;
    }

    function warningAt(m, l, ch, a, b, c, d) {
        return warning(m, {
            line: l,
            from: ch
        }, a, b, c, d);
    }

    function error(m, t, a, b, c, d) {
        var w = warning(m, t, a, b, c, d);
        quit("Stopping, unable to continue.", w.line, w.character);
    }

    function errorAt(m, l, ch, a, b, c, d) {
        return error(m, {
            line: l,
            from: ch
        }, a, b, c, d);
    }



// lexical analysis

    var lex = (function lex() {
        var character, from, line, s;

// Private lex methods

        function nextLine() {
            var at;
            if (line >= lines.length) {
                return false;
            }
            character = 1;
            s = lines[line];
            line += 1;
            at = s.search(/ \t/);
            if (at >= 0) {
                warningAt("Mixed spaces and tabs.", line, at + 1);
            }
            s = s.replace(/\t/g, tab);
            at = s.search(cx);
            if (at >= 0) {
                warningAt("Unsafe character.", line, at);
            }
            if (option.maxlen && option.maxlen < s.length) {
                warningAt("Line too long.", line, s.length);
            }
            return true;
        }

// Produce a token object.  The token inherits from a syntax symbol.

        function it(type, value) {
            var i, t;
            if (type === '(color)' || type === '(range)') {
                t = {type: type};
            } else if (type === '(punctuator)' ||
                    (type === '(identifier)' && is_own(syntax, value))) {
                t = syntax[value] || syntax['(error)'];
            } else {
                t = syntax[type];
            }
            t = Object.create(t);
            if (type === '(string)' || type === '(range)') {
                if (jx.test(value)) {
                    warningAt("Script URL.", line, from);
                }
            }
            if (type === '(identifier)') {
                t.identifier = true;
                if (value === '__iterator__' || value === '__proto__') {
                    errorAt("Reserved name '{a}'.",
                        line, from, value);
                } else if (option.nomen &&
                        (value.charAt(0) === '_' ||
                         value.charAt(value.length - 1) === '_')) {
                    warningAt("Unexpected {a} in '{b}'.", line, from,
                        "dangling '_'", value);
                }
            }
            t.value = value;
            t.line = line;
            t.character = character;
            t.from = from;
            i = t.id;
            if (i !== '(endline)') {
                prereg = i &&
                    (('(,=:[!&|?{};'.indexOf(i.charAt(i.length - 1)) >= 0) ||
                    i === 'return');
            }
            return t;
        }

// Public lex methods

        return {
            init: function (source) {
                if (typeof source === 'string') {
                    lines = source
                        .replace(/\r\n/g, '\n')
                        .replace(/\r/g, '\n')
                        .split('\n');
                } else {
                    lines = source;
                }
                line = 0;
                nextLine();
                from = 1;
            },

            range: function (begin, end) {
                var c, value = '';
                from = character;
                if (s.charAt(0) !== begin) {
                    errorAt("Expected '{a}' and instead saw '{b}'.",
                            line, character, begin, s.charAt(0));
                }
                for (;;) {
                    s = s.slice(1);
                    character += 1;
                    c = s.charAt(0);
                    switch (c) {
                    case '':
                        errorAt("Missing '{a}'.", line, character, c);
                        break;
                    case end:
                        s = s.slice(1);
                        character += 1;
                        return it('(range)', value);
                    case xquote:
                    case '\\':
                        warningAt("Unexpected '{a}'.", line, character, c);
                    }
                    value += c;
                }

            },

// token -- this is called by advance to get the next token.

            token: function () {
                var b, c, captures, d, depth, high, i, l, low, q, t;

                function match(x) {
                    var r = x.exec(s), r1;
                    if (r) {
                        l = r[0].length;
                        r1 = r[1];
                        c = r1.charAt(0);
                        s = s.substr(l);
                        from = character + l - r1.length;
                        character += l;
                        return r1;
                    }
                }

                function string(x) {
                    var c, j, r = '';

                    if (jsonmode && x !== '"') {
                        warningAt("Strings must use doublequote.",
                                line, character);
                    }

                    if (xquote === x || (xmode === 'scriptstring' && !xquote)) {
                        return it('(punctuator)', x);
                    }

                    function esc(n) {
                        var i = parseInt(s.substr(j + 1, n), 16);
                        j += n;
                        if (i >= 32 && i <= 126 &&
                                i !== 34 && i !== 92 && i !== 39) {
                            warningAt("Unnecessary escapement.", line, character);
                        }
                        character += n;
                        c = String.fromCharCode(i);
                    }
                    j = 0;
                    for (;;) {
                        while (j >= s.length) {
                            j = 0;
                            if (xmode !== 'html' || !nextLine()) {
                                errorAt("Unclosed string.", line, from);
                            }
                        }
                        c = s.charAt(j);
                        if (c === x) {
                            character += 1;
                            s = s.substr(j + 1);
                            return it('(string)', r, x);
                        }
                        if (c < ' ') {
                            if (c === '\n' || c === '\r') {
                                break;
                            }
                            warningAt("Control character in string: {a}.",
                                    line, character + j, s.slice(0, j));
                        } else if (c === xquote) {
                            warningAt("Bad HTML string", line, character + j);
                        } else if (c === '<') {
                            if (option.safe && xmode === 'html') {
                                warningAt("ADsafe string violation.",
                                        line, character + j);
                            } else if (s.charAt(j + 1) === '/' && (xmode || option.safe)) {
                                warningAt("Expected '<\\/' and instead saw '</'.", line, character);
                            } else if (s.charAt(j + 1) === '!' && (xmode || option.safe)) {
                                warningAt("Unexpected '<!' in a string.", line, character);
                            }
                        } else if (c === '\\') {
                            if (xmode === 'html') {
                                if (option.safe) {
                                    warningAt("ADsafe string violation.",
                                            line, character + j);
                                }
                            } else if (xmode === 'styleproperty') {
                                j += 1;
                                character += 1;
                                c = s.charAt(j);
                                if (c !== x) {
                                    warningAt("Escapement in style string.",
                                            line, character + j);
                                }
                            } else {
                                j += 1;
                                character += 1;
                                c = s.charAt(j);
                                switch (c) {
                                case xquote:
                                    warningAt("Bad HTML string", line,
                                        character + j);
                                    break;
                                case '\\':
                                case '\'':
                                case '"':
                                case '/':
                                    break;
                                case 'b':
                                    c = '\b';
                                    break;
                                case 'f':
                                    c = '\f';
                                    break;
                                case 'n':
                                    c = '\n';
                                    break;
                                case 'r':
                                    c = '\r';
                                    break;
                                case 't':
                                    c = '\t';
                                    break;
                                case 'u':
                                    esc(4);
                                    break;
                                case 'v':
                                    c = '\v';
                                    break;
                                case 'x':
                                    if (jsonmode) {
                                        warningAt("Avoid \\x-.", line, character);
                                    }
                                    esc(2);
                                    break;
                                default:
                                    warningAt("Bad escapement.", line, character);
                                }
                            }
                        }
                        r += c;
                        character += 1;
                        j += 1;
                    }
                }

                for (;;) {
                    if (!s) {
                        return it(nextLine() ? '(endline)' : '(end)', '');
                    }
                    while (xmode === 'outer') {
                        i = s.search(ox);
                        if (i === 0) {
                            break;
                        } else if (i > 0) {
                            character += 1;
                            s = s.slice(i);
                            break;
                        } else {
                            if (!nextLine()) {
                                return it('(end)', '');
                            }
                        }
                    }
//                     t = match(rx[xmode] || tx);
//                     if (!t) {
//                         if (xmode === 'html') {
//                             return it('(error)', s.charAt(0));
//                         } else {
//                             t = '';
//                             c = '';
//                             while (s && s < '!') {
//                                 s = s.substr(1);
//                             }
//                             if (s) {
//                                 errorAt("Unexpected '{a}'.",
//                                         line, character, s.substr(0, 1));
//                             }
//                         }
                    t = match(rx[xmode] || tx);
                    if (!t) {
                        t = '';
                        c = '';
                        while (s && s < '!') {
                            s = s.substr(1);
                        }
                        if (s) {
                            if (xmode === 'html') {
                                return it('(error)', s.charAt(0));
                            } else {
                                errorAt("Unexpected '{a}'.",
                                        line, character, s.substr(0, 1));
                            }
                        }
                    } else {

    //      identifier

                        if (c.isAlpha() || c === '_' || c === '$') {
                            return it('(identifier)', t);
                        }

    //      number

                        if (c.isDigit()) {
                            if (xmode !== 'style' && !isFinite(Number(t))) {
                                warningAt("Bad number '{a}'.",
                                    line, character, t);
                            }
                            if (xmode !== 'style' &&
                                     xmode !== 'styleproperty' &&
                                     s.substr(0, 1).isAlpha()) {
                                warningAt("Missing space after '{a}'.",
                                        line, character, t);
                            }
                            if (c === '0') {
                                d = t.substr(1, 1);
                                if (d.isDigit()) {
                                    if (token.id !== '.' && xmode !== 'styleproperty') {
                                        warningAt("Don't use extra leading zeros '{a}'.",
                                            line, character, t);
                                    }
                                } else if (jsonmode && (d === 'x' || d === 'X')) {
                                    warningAt("Avoid 0x-. '{a}'.",
                                            line, character, t);
                                }
                            }
                            if (t.substr(t.length - 1) === '.') {
                                warningAt(
        "A trailing decimal point can be confused with a dot '{a}'.",
                                        line, character, t);
                            }
                            return it('(number)', t);
                        }
                        switch (t) {

    //      string

                        case '"':
                        case "'":
                            return string(t);

    //      // comment

                        case '//':
                            if (src || (xmode && xmode !== 'script')) {
                                warningAt("Unexpected comment.", line, character);
                            } else if (xmode === 'script' && /<\s*\//i.test(s)) {
                                warningAt("Unexpected <\/ in comment.", line, character);
                            } else if ((option.safe || xmode === 'script') && ax.test(s)) {
                                warningAt("Dangerous comment.", line, character);
                            }
                            s = '';
                            token.comment = true;
                            break;

    //      /* comment

                        case '/*':
                            if (src || (xmode && xmode !== 'script' && xmode !== 'style' && xmode !== 'styleproperty')) {
                                warningAt("Unexpected comment.", line, character);
                            }
                            if (option.safe && ax.test(s)) {
                                warningAt("ADsafe comment violation.", line, character);
                            }
                            for (;;) {
                                i = s.search(lx);
                                if (i >= 0) {
                                    break;
                                }
                                if (!nextLine()) {
                                    errorAt("Unclosed comment.", line, character);
                                } else {
                                    if (option.safe && ax.test(s)) {
                                        warningAt("ADsafe comment violation.",
                                                line, character);
                                    }
                                }
                            }
                            character += i + 2;
                            if (s.substr(i, 1) === '/') {
                                errorAt("Nested comment.", line, character);
                            }
                            s = s.substr(i + 2);
                            token.comment = true;
                            break;

    //      /*members /*jslint /*global

                        case '/*members':
                        case '/*member':
                        case '/*jslint':
                        case '/*global':
                        case '*/':
                            return {
                                value: t,
                                type: 'special',
                                line: line,
                                character: character,
                                from: from
                            };

                        case '':
                            break;
    //      /
                        case '/':
                            if (token.id === '/=') {
                                errorAt(
"A regular expression literal can be confused with '/='.", line, from);
                            }
                            if (prereg) {
                                depth = 0;
                                captures = 0;
                                l = 0;
                                for (;;) {
                                    b = true;
                                    c = s.charAt(l);
                                    l += 1;
                                    switch (c) {
                                    case '':
                                        errorAt("Unclosed regular expression.",
                                                line, from);
                                        return;
                                    case '/':
                                        if (depth > 0) {
                                            warningAt("Unescaped '{a}'.",
                                                    line, from + l, '/');
                                        }
                                        c = s.substr(0, l - 1);
                                        q = {
                                            g: true,
                                            i: true,
                                            m: true
                                        };
                                        while (q[s.charAt(l)] === true) {
                                            q[s.charAt(l)] = false;
                                            l += 1;
                                        }
                                        character += l;
                                        s = s.substr(l);
                                        q = s.charAt(0);
                                        if (q === '/' || q === '*') {
                                            errorAt("Confusing regular expression.",
                                                    line, from);
                                        }
                                        return it('(regexp)', c);
                                    case '\\':
                                        c = s.charAt(l);
                                        if (c < ' ') {
                                            warningAt(
"Unexpected control character in regular expression.", line, from + l);
                                        } else if (c === '<') {
                                            warningAt(
"Unexpected escaped character '{a}' in regular expression.", line, from + l, c);
                                        }
                                        l += 1;
                                        break;
                                    case '(':
                                        depth += 1;
                                        b = false;
                                        if (s.charAt(l) === '?') {
                                            l += 1;
                                            switch (s.charAt(l)) {
                                            case ':':
                                            case '=':
                                            case '!':
                                                l += 1;
                                                break;
                                            default:
                                                warningAt(
"Expected '{a}' and instead saw '{b}'.", line, from + l, ':', s.charAt(l));
                                            }
                                        } else {
                                            captures += 1;
                                        }
                                        break;
                                    case '|':
                                        b = false;
                                        break;
                                    case ')':
                                        if (depth === 0) {
                                            warningAt("Unescaped '{a}'.",
                                                    line, from + l, ')');
                                        } else {
                                            depth -= 1;
                                        }
                                        break;
                                    case ' ':
                                        q = 1;
                                        while (s.charAt(l) === ' ') {
                                            l += 1;
                                            q += 1;
                                        }
                                        if (q > 1) {
                                            warningAt(
"Spaces are hard to count. Use {{a}}.", line, from + l, q);
                                        }
                                        break;
                                    case '[':
                                        c = s.charAt(l);
                                        if (c === '^') {
                                            l += 1;
                                            if (option.regexp) {
                                                warningAt("Insecure '{a}'.",
                                                        line, from + l, c);
                                            } else if (s.charAt(l) === ']') {
                                                errorAt("Unescaped '{a}'.",
                                                    line, from + l, '^');
                                            }
                                        }
                                        q = false;
                                        if (c === ']') {
                                            warningAt("Empty class.", line,
                                                    from + l - 1);
                                            q = true;
                                        }
klass:                                  do {
                                            c = s.charAt(l);
                                            l += 1;
                                            switch (c) {
                                            case '[':
                                            case '^':
                                                warningAt("Unescaped '{a}'.",
                                                        line, from + l, c);
                                                q = true;
                                                break;
                                            case '-':
                                                if (q) {
                                                    q = false;
                                                } else {
                                                    warningAt("Unescaped '{a}'.",
                                                            line, from + l, '-');
                                                    q = true;
                                                }
                                                break;
                                            case ']':
                                                if (!q) {
                                                    warningAt("Unescaped '{a}'.",
                                                            line, from + l - 1, '-');
                                                }
                                                break klass;
                                            case '\\':
                                                c = s.charAt(l);
                                                if (c < ' ') {
                                                    warningAt(
"Unexpected control character in regular expression.", line, from + l);
                                                } else if (c === '<') {
                                                    warningAt(
"Unexpected escaped character '{a}' in regular expression.", line, from + l, c);
                                                }
                                                l += 1;
                                                q = true;
                                                break;
                                            case '/':
                                                warningAt("Unescaped '{a}'.",
                                                        line, from + l - 1, '/');
                                                q = true;
                                                break;
                                            case '<':
                                                if (xmode === 'script') {
                                                    c = s.charAt(l);
                                                    if (c === '!' || c === '/') {
                                                        warningAt(
"HTML confusion in regular expression '<{a}'.", line, from + l, c);
                                                    }
                                                }
                                                q = true;
                                                break;
                                            default:
                                                q = true;
                                            }
                                        } while (c);
                                        break;
                                    case '.':
                                        if (option.regexp) {
                                            warningAt("Insecure '{a}'.", line,
                                                    from + l, c);
                                        }
                                        break;
                                    case ']':
                                    case '?':
                                    case '{':
                                    case '}':
                                    case '+':
                                    case '*':
                                        warningAt("Unescaped '{a}'.", line,
                                                from + l, c);
                                        break;
                                    case '<':
                                        if (xmode === 'script') {
                                            c = s.charAt(l);
                                            if (c === '!' || c === '/') {
                                                warningAt(
"HTML confusion in regular expression '<{a}'.", line, from + l, c);
                                            }
                                        }
                                    }
                                    if (b) {
                                        switch (s.charAt(l)) {
                                        case '?':
                                        case '+':
                                        case '*':
                                            l += 1;
                                            if (s.charAt(l) === '?') {
                                                l += 1;
                                            }
                                            break;
                                        case '{':
                                            l += 1;
                                            c = s.charAt(l);
                                            if (c < '0' || c > '9') {
                                                warningAt(
"Expected a number and instead saw '{a}'.", line, from + l, c);
                                            }
                                            l += 1;
                                            low = +c;
                                            for (;;) {
                                                c = s.charAt(l);
                                                if (c < '0' || c > '9') {
                                                    break;
                                                }
                                                l += 1;
                                                low = +c + (low * 10);
                                            }
                                            high = low;
                                            if (c === ',') {
                                                l += 1;
                                                high = Infinity;
                                                c = s.charAt(l);
                                                if (c >= '0' && c <= '9') {
                                                    l += 1;
                                                    high = +c;
                                                    for (;;) {
                                                        c = s.charAt(l);
                                                        if (c < '0' || c > '9') {
                                                            break;
                                                        }
                                                        l += 1;
                                                        high = +c + (high * 10);
                                                    }
                                                }
                                            }
                                            if (s.charAt(l) !== '}') {
                                                warningAt(
"Expected '{a}' and instead saw '{b}'.", line, from + l, '}', c);
                                            } else {
                                                l += 1;
                                            }
                                            if (s.charAt(l) === '?') {
                                                l += 1;
                                            }
                                            if (low > high) {
                                                warningAt(
"'{a}' should not be greater than '{b}'.", line, from + l, low, high);
                                            }
                                        }
                                    }
                                }
                                c = s.substr(0, l - 1);
                                character += l;
                                s = s.substr(l);
                                return it('(regexp)', c);
                            }
                            return it('(punctuator)', t);

    //      punctuator

                        case '<!--':
                            l = line;
                            c = character;
                            for (;;) {
                                i = s.indexOf('--');
                                if (i >= 0) {
                                    break;
                                }
                                i = s.indexOf('<!');
                                if (i >= 0) {
                                    errorAt("Nested HTML comment.",
                                        line, character + i);
                                }
                                if (!nextLine()) {
                                    errorAt("Unclosed HTML comment.", l, c);
                                }
                            }
                            l = s.indexOf('<!');
                            if (l >= 0 && l < i) {
                                errorAt("Nested HTML comment.",
                                    line, character + l);
                            }
                            character += i;
                            if (s.charAt(i + 2) !== '>') {
                                errorAt("Expected -->.", line, character);
                            }
                            character += 3;
                            s = s.slice(i + 3);
                            break;
                        case '#':
                            if (xmode === 'html' || xmode === 'styleproperty') {
                                for (;;) {
                                    c = s.charAt(0);
                                    if ((c < '0' || c > '9') &&
                                            (c < 'a' || c > 'f') &&
                                            (c < 'A' || c > 'F')) {
                                        break;
                                    }
                                    character += 1;
                                    s = s.substr(1);
                                    t += c;
                                }
                                if (t.length !== 4 && t.length !== 7) {
                                    warningAt("Bad hex color '{a}'.", line,
                                        from + l, t);
                                }
                                return it('(color)', t);
                            }
                            return it('(punctuator)', t);
                        default:
                            if (xmode === 'outer' && c === '&') {
                                character += 1;
                                s = s.substr(1);
                                for (;;) {
                                    c = s.charAt(0);
                                    character += 1;
                                    s = s.substr(1);
                                    if (c === ';') {
                                        break;
                                    }
                                    if (!((c >= '0' && c <= '9') ||
                                            (c >= 'a' && c <= 'z') ||
                                            c === '#')) {
                                        errorAt("Bad entity", line, from + l,
                                        character);
                                    }
                                }
                                break;
                            }
                            return it('(punctuator)', t);
                        }
                    }
                }
            }
        };
    }());


    function addlabel(t, type) {

        if (option.safe && funct['(global)'] &&
                typeof predefined[t] !== 'boolean') {
            warning('ADsafe global: ' + t + '.', token);
        } else if (t === 'hasOwnProperty') {
            warning("'hasOwnProperty' is a really bad name.");
        }

// Define t in the current function in the current scope.

        if (is_own(funct, t) && !funct['(global)']) {
            warning(funct[t] === true ?
                "'{a}' was used before it was defined." :
                "'{a}' is already defined.",
                nexttoken, t);
        }
        funct[t] = type;
        if (funct['(global)']) {
            global[t] = funct;
            if (is_own(implied, t)) {
                warning("'{a}' was used before it was defined.", nexttoken, t);
                delete implied[t];
            }
        } else {
            scope[t] = funct;
        }
    }


    function doOption() {
        var b, obj, filter, o = nexttoken.value, t, v;
        switch (o) {
        case '*/':
            error("Unbegun comment.");
            break;
        case '/*members':
        case '/*member':
            o = '/*members';
            if (!membersOnly) {
                membersOnly = {};
            }
            obj = membersOnly;
            break;
        case '/*jslint':
            if (option.safe) {
                warning("ADsafe restriction.");
            }
            obj = option;
            filter = boolOptions;
            break;
        case '/*global':
            if (option.safe) {
                warning("ADsafe restriction.");
            }
            obj = predefined;
            break;
        default:
        }
        t = lex.token();
loop:   for (;;) {
            for (;;) {
                if (t.type === 'special' && t.value === '*/') {
                    break loop;
                }
                if (t.id !== '(endline)' && t.id !== ',') {
                    break;
                }
                t = lex.token();
            }
            if (t.type !== '(string)' && t.type !== '(identifier)' &&
                    o !== '/*members') {
                error("Bad option.", t);
            }
            v = lex.token();
            if (v.id === ':') {
                v = lex.token();
                if (obj === membersOnly) {
                    error("Expected '{a}' and instead saw '{b}'.",
                            t, '*/', ':');
                }
                if (t.value === 'indent' && o === '/*jslint') {
                    b = +v.value;
                    if (typeof b !== 'number' || !isFinite(b) || b <= 0 ||
                            Math.floor(b) !== b) {
                        error("Expected a small integer and instead saw '{a}'.",
                                v, v.value);
                    }
                    obj.white = true;
                    obj.indent = b;
                } else if (t.value === 'maxerr' && o === '/*jslint') {
                    b = +v.value;
                    if (typeof b !== 'number' || !isFinite(b) || b <= 0 ||
                            Math.floor(b) !== b) {
                        error("Expected a small integer and instead saw '{a}'.",
                                v, v.value);
                    }
                    obj.maxerr = b;
                } else if (t.value === 'maxlen' && o === '/*jslint') {
                    b = +v.value;
                    if (typeof b !== 'number' || !isFinite(b) || b <= 0 ||
                            Math.floor(b) !== b) {
                        error("Expected a small integer and instead saw '{a}'.",
                                v, v.value);
                    }
                    obj.maxlen = b;
                } else if (v.value === 'true') {
                    obj[t.value] = true;
                } else if (v.value === 'false') {
                    obj[t.value] = false;
                } else {
                    error("Bad option value.", v);
                }
                t = lex.token();
            } else {
                if (o === '/*jslint') {
                    error("Missing option value.", t);
                }
                obj[t.value] = false;
                t = v;
            }
        }
        if (filter) {
            assume();
        }
    }


// We need a peek function. If it has an argument, it peeks that much farther
// ahead. It is used to distinguish
//     for ( var i in ...
// from
//     for ( var i = ...

    function peek(p) {
        var i = p || 0, j = 0, t;

        while (j <= i) {
            t = lookahead[j];
            if (!t) {
                t = lookahead[j] = lex.token();
            }
            j += 1;
        }
        return t;
    }



// Produce the next token. It looks for programming errors.

    function advance(id, t) {
        switch (token.id) {
        case '(number)':
            if (nexttoken.id === '.') {
                warning(
"A dot following a number can be confused with a decimal point.", token);
            }
            break;
        case '-':
            if (nexttoken.id === '-' || nexttoken.id === '--') {
                warning("Confusing minusses.");
            }
            break;
        case '+':
            if (nexttoken.id === '+' || nexttoken.id === '++') {
                warning("Confusing plusses.");
            }
            break;
        }
        if (token.type === '(string)' || token.identifier) {
            anonname = token.value;
        }

        if (id && nexttoken.id !== id) {
            if (t) {
                if (nexttoken.id === '(end)') {
                    warning("Unmatched '{a}'.", t, t.id);
                } else {
                    warning(
"Expected '{a}' to match '{b}' from line {c} and instead saw '{d}'.",
                            nexttoken, id, t.id, t.line, nexttoken.value);
                }
            } else if (nexttoken.type !== '(identifier)' ||
                            nexttoken.value !== id) {
                warning("Expected '{a}' and instead saw '{b}'.",
                        nexttoken, id, nexttoken.value);
            }
        }
        prevtoken = token;
        token = nexttoken;
        for (;;) {
            nexttoken = lookahead.shift() || lex.token();
            if (nexttoken.id === '(end)' || nexttoken.id === '(error)') {
                return;
            }
            if (nexttoken.type === 'special') {
                doOption();
            } else {
                if (nexttoken.id !== '(endline)') {
                    break;
                }
            }
        }
    }


// This is the heart of JSLINT, the Pratt parser. In addition to parsing, it
// is looking for ad hoc lint patterns. We add to Pratt's model .fud, which is
// like nud except that it is only used on the first token of a statement.
// Having .fud makes it much easier to define JavaScript. I retained Pratt's
// nomenclature.

// .nud     Null denotation
// .fud     First null denotation
// .led     Left denotation
//  lbp     Left binding power
//  rbp     Right binding power

// They are key to the parsing method called Top Down Operator Precedence.

    function parse(rbp, initial) {
        var left;
        if (nexttoken.id === '(end)') {
            error("Unexpected early end of program.", token);
        }
        advance();
        if (option.safe && typeof predefined[token.value] === 'boolean' &&
                (nexttoken.id !== '(' && nexttoken.id !== '.')) {
            warning('ADsafe violation.', token);
        }
        if (initial) {
            anonname = 'anonymous';
            funct['(verb)'] = token.value;
        }
        if (initial === true && token.fud) {
            left = token.fud();
        } else {
            if (token.nud) {
                left = token.nud();
            } else {
                if (nexttoken.type === '(number)' && token.id === '.') {
                    warning(
"A leading decimal point can be confused with a dot: '.{a}'.",
                            token, nexttoken.value);
                    advance();
                    return token;
                } else {
                    error("Expected an identifier and instead saw '{a}'.",
                            token, token.id);
                }
            }
            while (rbp < nexttoken.lbp) {
                advance();
                if (token.led) {
                    left = token.led(left);
                } else {
                    error("Expected an operator and instead saw '{a}'.",
                        token, token.id);
                }
            }
        }
        return left;
    }


// Functions for conformance of style.

    function adjacent(left, right) {
        left = left || token;
        right = right || nexttoken;
        if (option.white || xmode === 'styleproperty' || xmode === 'style') {
            if (left.character !== right.from && left.line === right.line) {
                warning("Unexpected space after '{a}'.", right, left.value);
            }
        }
    }

    function nobreak(left, right) {
        left = left || token;
        right = right || nexttoken;
        if (left.character !== right.from || left.line !== right.line) {
            warning("Unexpected space before '{a}'.", right, right.value);
        }
    }

    function nospace(left, right) {
        left = left || token;
        right = right || nexttoken;
        if (option.white && !left.comment) {
            if (left.line === right.line) {
                adjacent(left, right);
            }
        }
    }


    function nonadjacent(left, right) {
        if (option.white) {
            left = left || token;
            right = right || nexttoken;
            if (left.line === right.line && left.character === right.from) {
                warning("Missing space after '{a}'.",
                        nexttoken, left.value);
            }
        }
    }

    function nobreaknonadjacent(left, right) {
        left = left || token;
        right = right || nexttoken;
        if (!option.laxbreak && left.line !== right.line) {
            warning("Bad line breaking before '{a}'.", right, right.id);
        } else if (option.white) {
            left = left || token;
            right = right || nexttoken;
            if (left.character === right.from) {
                warning("Missing space after '{a}'.",
                        nexttoken, left.value);
            }
        }
    }

    function indentation(bias) {
        var i;
        if (option.white && nexttoken.id !== '(end)') {
            i = indent + (bias || 0);
            if (nexttoken.from !== i) {
                warning(
"Expected '{a}' to have an indentation at {b} instead at {c}.",
                        nexttoken, nexttoken.value, i, nexttoken.from);
            }
        }
    }

    function nolinebreak(t) {
        t = t || token;
        if (t.line !== nexttoken.line) {
            warning("Line breaking error '{a}'.", t, t.value);
        }
    }


    function comma() {
        if (token.line !== nexttoken.line) {
            if (!option.laxbreak) {
                warning("Bad line breaking before '{a}'.", token, nexttoken.id);
            }
        } else if (token.character !== nexttoken.from && option.white) {
            warning("Unexpected space after '{a}'.", nexttoken, token.value);
        }
        advance(',');
        nonadjacent(token, nexttoken);
    }


// Functional constructors for making the symbols that will be inherited by
// tokens.

    function symbol(s, p) {
        var x = syntax[s];
        if (!x || typeof x !== 'object') {
            syntax[s] = x = {
                id: s,
                lbp: p,
                value: s
            };
        }
        return x;
    }


    function delim(s) {
        return symbol(s, 0);
    }


    function stmt(s, f) {
        var x = delim(s);
        x.identifier = x.reserved = true;
        x.fud = f;
        return x;
    }


    function blockstmt(s, f) {
        var x = stmt(s, f);
        x.block = true;
        return x;
    }


    function reserveName(x) {
        var c = x.id.charAt(0);
        if ((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z')) {
            x.identifier = x.reserved = true;
        }
        return x;
    }


    function prefix(s, f) {
        var x = symbol(s, 150);
        reserveName(x);
        x.nud = (typeof f === 'function') ? f : function () {
            this.right = parse(150);
            this.arity = 'unary';
            if (this.id === '++' || this.id === '--') {
                if (option.plusplus) {
                    warning("Unexpected use of '{a}'.", this, this.id);
                } else if ((!this.right.identifier || this.right.reserved) &&
                        this.right.id !== '.' && this.right.id !== '[') {
                    warning("Bad operand.", this);
                }
            }
            return this;
        };
        return x;
    }


    function type(s, f) {
        var x = delim(s);
        x.type = s;
        x.nud = f;
        return x;
    }


    function reserve(s, f) {
        var x = type(s, f);
        x.identifier = x.reserved = true;
        return x;
    }


    function reservevar(s, v) {
        return reserve(s, function () {
            if (typeof v === 'function') {
                v(this);
            }
            return this;
        });
    }


    function infix(s, f, p, w) {
        var x = symbol(s, p);
        reserveName(x);
        x.led = function (left) {
            if (!w) {
                nobreaknonadjacent(prevtoken, token);
                nonadjacent(token, nexttoken);
            }
            if (typeof f === 'function') {
                return f(left, this);
            } else {
                this.left = left;
                this.right = parse(p);
                return this;
            }
        };
        return x;
    }


    function relation(s, f) {
        var x = symbol(s, 100);
        x.led = function (left) {
            nobreaknonadjacent(prevtoken, token);
            nonadjacent(token, nexttoken);
            var right = parse(100);
            if ((left && left.id === 'NaN') || (right && right.id === 'NaN')) {
                warning("Use the isNaN function to compare with NaN.", this);
            } else if (f) {
                f.apply(this, [left, right]);
            }
            if (left.id === '!') {
                warning("Confusing use of '{a}'.", left, '!');
            }
            if (right.id === '!') {
                warning("Confusing use of '{a}'.", left, '!');
            }
            this.left = left;
            this.right = right;
            return this;
        };
        return x;
    }


    function isPoorRelation(node) {
        return node &&
              ((node.type === '(number)' && +node.value === 0) ||
               (node.type === '(string)' && node.value === '') ||
                node.type === 'true' ||
                node.type === 'false' ||
                node.type === 'undefined' ||
                node.type === 'null');
    }


    function assignop(s, f) {
        symbol(s, 20).exps = true;
        return infix(s, function (left, that) {
            var l;
            that.left = left;
            if (predefined[left.value] === false &&
                    scope[left.value]['(global)'] === true) {
                warning("Read only.", left);
            } else if (left['function']) {
                warning("'{a}' is a function.", left, left.value);
            }
            if (option.safe) {
                l = left;
                do {
                    if (typeof predefined[l.value] === 'boolean') {
                        warning('ADsafe violation.', l);
                    }
                    l = l.left;
                } while (l);
            }
            if (left) {
                if (left.id === '.' || left.id === '[') {
                    if (!left.left || left.left.value === 'arguments') {
                        warning('Bad assignment.', that);
                    }
                    that.right = parse(19);
                    return that;
                } else if (left.identifier && !left.reserved) {
                    if (funct[left.value] === 'exception') {
                        warning("Do not assign to the exception parameter.", left);
                    }
                    that.right = parse(19);
                    return that;
                }
                if (left === syntax['function']) {
                    warning(
"Expected an identifier in an assignment and instead saw a function invocation.",
                                token);
                }
            }
            error("Bad assignment.", that);
        }, 20);
    }


    function bitwise(s, f, p) {
        var x = symbol(s, p);
        reserveName(x);
        x.led = (typeof f === 'function') ? f : function (left) {
            if (option.bitwise) {
                warning("Unexpected use of '{a}'.", this, this.id);
            }
            this.left = left;
            this.right = parse(p);
            return this;
        };
        return x;
    }


    function bitwiseassignop(s) {
        symbol(s, 20).exps = true;
        return infix(s, function (left, that) {
            if (option.bitwise) {
                warning("Unexpected use of '{a}'.", that, that.id);
            }
            nonadjacent(prevtoken, token);
            nonadjacent(token, nexttoken);
            if (left) {
                if (left.id === '.' || left.id === '[' ||
                        (left.identifier && !left.reserved)) {
                    parse(19);
                    return that;
                }
                if (left === syntax['function']) {
                    warning(
"Expected an identifier in an assignment, and instead saw a function invocation.",
                                token);
                }
                return that;
            }
            error("Bad assignment.", that);
        }, 20);
    }


    function suffix(s, f) {
        var x = symbol(s, 150);
        x.led = function (left) {
            if (option.plusplus) {
                warning("Unexpected use of '{a}'.", this, this.id);
            } else if ((!left.identifier || left.reserved) &&
                    left.id !== '.' && left.id !== '[') {
                warning("Bad operand.", this);
            }
            this.left = left;
            return this;
        };
        return x;
    }


    function optionalidentifier() {
        if (nexttoken.identifier) {
            advance();
            if (option.safe && banned[token.value]) {
                warning("ADsafe violation: '{a}'.", token, token.value);
            } else if (token.reserved && !option.es5) {
                warning("Expected an identifier and instead saw '{a}' (a reserved word).",
                        token, token.id);
            }
            return token.value;
        }
    }


    function identifier() {
        var i = optionalidentifier();
        if (i) {
            return i;
        }
        if (token.id === 'function' && nexttoken.id === '(') {
            warning("Missing name in function statement.");
        } else {
            error("Expected an identifier and instead saw '{a}'.",
                    nexttoken, nexttoken.value);
        }
    }


    function reachable(s) {
        var i = 0, t;
        if (nexttoken.id !== ';' || noreach) {
            return;
        }
        for (;;) {
            t = peek(i);
            if (t.reach) {
                return;
            }
            if (t.id !== '(endline)') {
                if (t.id === 'function') {
                    warning(
"Inner functions should be listed at the top of the outer function.", t);
                    break;
                }
                warning("Unreachable '{a}' after '{b}'.", t, t.value, s);
                break;
            }
            i += 1;
        }
    }


    function statement(noindent) {
        var i = indent, r, s = scope, t = nexttoken;

// We don't like the empty statement.

        if (t.id === ';') {
            warning("Unnecessary semicolon.", t);
            advance(';');
            return;
        }

// Is this a labelled statement?

        if (t.identifier && !t.reserved && peek().id === ':') {
            advance();
            advance(':');
            scope = Object.create(s);
            addlabel(t.value, 'label');
            if (!nexttoken.labelled) {
                warning("Label '{a}' on {b} statement.",
                        nexttoken, t.value, nexttoken.value);
            }
            if (jx.test(t.value + ':')) {
                warning("Label '{a}' looks like a javascript url.",
                        t, t.value);
            }
            nexttoken.label = t.value;
            t = nexttoken;
        }

// Parse the statement.

        if (!noindent) {
            indentation();
        }
        r = parse(0, true);

// Look for the final semicolon.

        if (!t.block) {
            if (!r || !r.exps) {
                warning(
"Expected an assignment or function call and instead saw an expression.",
                        token);
            } else if (r.id === '(' && r.left.id === 'new') {
                warning("Do not use 'new' for side effects.");
            }
            if (nexttoken.id !== ';') {
                warningAt("Missing semicolon.", token.line,
                        token.from + token.value.length);
            } else {
                adjacent(token, nexttoken);
                advance(';');
                nonadjacent(token, nexttoken);
            }
        }

// Restore the indentation.

        indent = i;
        scope = s;
        return r;
    }


    function use_strict() {
        if (nexttoken.value === 'use strict') {
            advance();
            advance(';');
            strict_mode = true;
            option.newcap = true;
            option.undef = true;
            return true;
        } else {
            return false;
        }
    }


    function statements(begin) {
        var a = [], f, p;
        if (begin && !use_strict() && option.strict) {
            warning('Missing "use strict" statement.', nexttoken);
        }
        if (option.adsafe) {
            switch (begin) {
            case 'script':
                if (!adsafe_may) {
                    if (nexttoken.value !== 'ADSAFE' ||
                            peek(0).id !== '.' ||
                            (peek(1).value !== 'id' &&
                            peek(1).value !== 'go')) {
                        error('ADsafe violation: Missing ADSAFE.id or ADSAFE.go.',
                            nexttoken);
                    }
                }
                if (nexttoken.value === 'ADSAFE' &&
                        peek(0).id === '.' &&
                        peek(1).value === 'id') {
                    if (adsafe_may) {
                        error('ADsafe violation.', nexttoken);
                    }
                    advance('ADSAFE');
                    advance('.');
                    advance('id');
                    advance('(');
                    if (nexttoken.value !== adsafe_id) {
                        error('ADsafe violation: id does not match.', nexttoken);
                    }
                    advance('(string)');
                    advance(')');
                    advance(';');
                    adsafe_may = true;
                }
                break;
            case 'lib':
                if (nexttoken.value === 'ADSAFE') {
                    advance('ADSAFE');
                    advance('.');
                    advance('lib');
                    advance('(');
                    advance('(string)');
                    comma();
                    f = parse(0);
                    if (f.id !== 'function') {
                        error('The second argument to lib must be a function.', f);
                    }
                    p = f.funct['(params)'];
                    p = p && p.join(', ');
                    if (p && p !== 'lib') {
                        error("Expected '{a}' and instead saw '{b}'.",
                            f, '(lib)', '(' + p + ')');
                    }
                    advance(')');
                    advance(';');
                    return a;
                } else {
                    error("ADsafe lib violation.");
                }
            }
        }
        while (!nexttoken.reach && nexttoken.id !== '(end)') {
            if (nexttoken.id === ';') {
                warning("Unnecessary semicolon.");
                advance(';');
            } else {
                a.push(statement());
            }
        }
        return a;
    }


    function block(f) {
        var a, b = inblock, old_indent = indent, s = scope, t;
        inblock = f;
        scope = Object.create(scope);
        nonadjacent(token, nexttoken);
        t = nexttoken;
        if (nexttoken.id === '{') {
            advance('{');
            if (nexttoken.id !== '}' || token.line !== nexttoken.line) {
                indent += option.indent;
                while (!f && nexttoken.from > indent) {
                    indent += option.indent;
                }
                if (!f) {
                    use_strict();
                }
                a = statements();
                indent -= option.indent;
                indentation();
            }
            advance('}', t);
            indent = old_indent;
        } else {
            warning("Expected '{a}' and instead saw '{b}'.",
                    nexttoken, '{', nexttoken.value);
            noreach = true;
            a = [statement()];
            noreach = false;
        }
        funct['(verb)'] = null;
        scope = s;
        inblock = b;
        if (f && (!a || a.length === 0)) {
            warning("Empty block.");
        }
        return a;
    }


    function countMember(m) {
        if (membersOnly && typeof membersOnly[m] !== 'boolean') {
            warning("Unexpected /*member '{a}'.", token, m);
        }
        if (typeof member[m] === 'number') {
            member[m] += 1;
        } else {
            member[m] = 1;
        }
    }


    function note_implied(token) {
        var name = token.value, line = token.line, a = implied[name];
        if (typeof a === 'function') {
            a = false;
        }
        if (!a) {
            a = [line];
            implied[name] = a;
        } else if (a[a.length - 1] !== line) {
            a.push(line);
        }
    }


// CSS parsing.


    function cssName() {
        if (nexttoken.identifier) {
            advance();
            return true;
        }
    }


    function cssNumber() {
        if (nexttoken.id === '-') {
            advance('-');
            adjacent();
            nolinebreak();
        }
        if (nexttoken.type === '(number)') {
            advance('(number)');
            return true;
        }
    }


    function cssString() {
        if (nexttoken.type === '(string)') {
            advance();
            return true;
        }
    }


    function cssColor() {
        var i, number, value;
        if (nexttoken.identifier) {
            value = nexttoken.value;
            if (value === 'rgb' || value === 'rgba') {
                advance();
                advance('(');
                for (i = 0; i < 3; i += 1) {
                    if (i) {
                        advance(',');
                    }
                    number = nexttoken.value;
                    if (nexttoken.type !== '(number)' || number < 0) {
                        warning("Expected a positive number and instead saw '{a}'",
                            nexttoken, number);
                        advance();
                    } else {
                        advance();
                        if (nexttoken.id === '%') {
                            advance('%');
                            if (number > 100) {
                                warning("Expected a percentage and instead saw '{a}'",
                                    token, number);
                            }
                        } else {
                            if (number > 255) {
                                warning("Expected a small number and instead saw '{a}'",
                                    token, number);
                            }
                        }
                    }
                }
                if (value === 'rgba') {
                    advance(',');
                    number = +nexttoken.value;
                    if (nexttoken.type !== '(number)' || number < 0 || number > 1) {
                        warning("Expected a number between 0 and 1 and instead saw '{a}'",
                            nexttoken, number);
                    }
                    advance();
                    if (nexttoken.id === '%') {
                        warning("Unexpected '%'.");
                        advance('%');
                    }
                }
                advance(')');
                return true;
            } else if (cssColorData[nexttoken.value] === true) {
                advance();
                return true;
            }
        } else if (nexttoken.type === '(color)') {
            advance();
            return true;
        }
        return false;
    }


    function cssLength() {
        if (nexttoken.id === '-') {
            advance('-');
            adjacent();
            nolinebreak();
        }
        if (nexttoken.type === '(number)') {
            advance();
            if (nexttoken.type !== '(string)' &&
                    cssLengthData[nexttoken.value] === true) {
                adjacent();
                advance();
            } else if (+token.value !== 0) {
                warning("Expected a linear unit and instead saw '{a}'.",
                    nexttoken, nexttoken.value);
            }
            return true;
        }
        return false;
    }


    function cssLineHeight() {
        if (nexttoken.id === '-') {
            advance('-');
            adjacent();
        }
        if (nexttoken.type === '(number)') {
            advance();
            if (nexttoken.type !== '(string)' &&
                    cssLengthData[nexttoken.value] === true) {
                adjacent();
                advance();
            }
            return true;
        }
        return false;
    }


    function cssWidth() {
        if (nexttoken.identifier) {
            switch (nexttoken.value) {
            case 'thin':
            case 'medium':
            case 'thick':
                advance();
                return true;
            }
        } else {
            return cssLength();
        }
    }


    function cssMargin() {
        if (nexttoken.identifier) {
            if (nexttoken.value === 'auto') {
                advance();
                return true;
            }
        } else {
            return cssLength();
        }
    }

    function cssAttr() {
        if (nexttoken.identifier && nexttoken.value === 'attr') {
            advance();
            advance('(');
            if (!nexttoken.identifier) {
                warning("Expected a name and instead saw '{a}'.",
                        nexttoken, nexttoken.value);
            }
            advance();
            advance(')');
            return true;
        }
        return false;
    }


    function cssCommaList() {
        while (nexttoken.id !== ';') {
            if (!cssName() && !cssString()) {
                warning("Expected a name and instead saw '{a}'.",
                        nexttoken, nexttoken.value);
            }
            if (nexttoken.id !== ',') {
                return true;
            }
            comma();
        }
    }


    function cssCounter() {
        if (nexttoken.identifier && nexttoken.value === 'counter') {
            advance();
            advance('(');
            advance();
            if (nexttoken.id === ',') {
                comma();
                if (nexttoken.type !== '(string)') {
                    warning("Expected a string and instead saw '{a}'.",
                        nexttoken, nexttoken.value);
                }
                advance();
            }
            advance(')');
            return true;
        }
        if (nexttoken.identifier && nexttoken.value === 'counters') {
            advance();
            advance('(');
            if (!nexttoken.identifier) {
                warning("Expected a name and instead saw '{a}'.",
                        nexttoken, nexttoken.value);
            }
            advance();
            if (nexttoken.id === ',') {
                comma();
                if (nexttoken.type !== '(string)') {
                    warning("Expected a string and instead saw '{a}'.",
                        nexttoken, nexttoken.value);
                }
                advance();
            }
            if (nexttoken.id === ',') {
                comma();
                if (nexttoken.type !== '(string)') {
                    warning("Expected a string and instead saw '{a}'.",
                        nexttoken, nexttoken.value);
                }
                advance();
            }
            advance(')');
            return true;
        }
        return false;
    }


    function cssShape() {
        var i;
        if (nexttoken.identifier && nexttoken.value === 'rect') {
            advance();
            advance('(');
            for (i = 0; i < 4; i += 1) {
                if (!cssLength()) {
                    warning("Expected a number and instead saw '{a}'.",
                        nexttoken, nexttoken.value);
                    break;
                }
            }
            advance(')');
            return true;
        }
        return false;
    }


    function cssUrl() {
        var c, url;
        if (nexttoken.identifier && nexttoken.value === 'url') {
            nexttoken = lex.range('(', ')');
            url = nexttoken.value;
            c = url.charAt(0);
            if (c === '"' || c === '\'') {
                if (url.slice(-1) !== c) {
                    warning("Bad url string.");
                } else {
                    url = url.slice(1, -1);
                    if (url.indexOf(c) >= 0) {
                        warning("Bad url string.");
                    }
                }
            }
            if (!url) {
                warning("Missing url.");
            }
            advance();
            if (option.safe && ux.test(url)) {
                error("ADsafe URL violation.");
            }
            urls.push(url);
            return true;
        }
        return false;
    }


    cssAny = [cssUrl, function () {
        for (;;) {
            if (nexttoken.identifier) {
                switch (nexttoken.value.toLowerCase()) {
                case 'url':
                    cssUrl();
                    break;
                case 'expression':
                    warning("Unexpected expression '{a}'.",
                        nexttoken, nexttoken.value);
                    advance();
                    break;
                default:
                    advance();
                }
            } else {
                if (nexttoken.id === ';' || nexttoken.id === '!'  ||
                        nexttoken.id === '(end)' || nexttoken.id === '}') {
                    return true;
                }
                advance();
            }
        }
    }];


    cssBorderStyle = [
        'none', 'dashed', 'dotted', 'double', 'groove',
        'hidden', 'inset', 'outset', 'ridge', 'solid'
    ];

    cssBreak = [
        'auto', 'always', 'avoid', 'left', 'right'
    ];

    cssMedia = {
        'all': true,
        'braille': true,
        'embossed': true,
        'handheld': true,
        'print': true,
        'projection': true,
        'screen': true,
        'speech': true,
        'tty': true,
        'tv': true
    };

    cssOverflow = [
        'auto', 'hidden', 'scroll', 'visible'
    ];

    cssAttributeData = {
        background: [
            true, 'background-attachment', 'background-color',
            'background-image', 'background-position', 'background-repeat'
        ],
        'background-attachment': ['scroll', 'fixed'],
        'background-color': ['transparent', cssColor],
        'background-image': ['none', cssUrl],
        'background-position': [
            2, [cssLength, 'top', 'bottom', 'left', 'right', 'center']
        ],
        'background-repeat': [
            'repeat', 'repeat-x', 'repeat-y', 'no-repeat'
        ],
        'border': [true, 'border-color', 'border-style', 'border-width'],
        'border-bottom': [
            true, 'border-bottom-color', 'border-bottom-style',
            'border-bottom-width'
        ],
        'border-bottom-color': cssColor,
        'border-bottom-style': cssBorderStyle,
        'border-bottom-width': cssWidth,
        'border-collapse': ['collapse', 'separate'],
        'border-color': ['transparent', 4, cssColor],
        'border-left': [
            true, 'border-left-color', 'border-left-style', 'border-left-width'
        ],
        'border-left-color': cssColor,
        'border-left-style': cssBorderStyle,
        'border-left-width': cssWidth,
        'border-right': [
            true, 'border-right-color', 'border-right-style',
            'border-right-width'
        ],
        'border-right-color': cssColor,
        'border-right-style': cssBorderStyle,
        'border-right-width': cssWidth,
        'border-spacing': [2, cssLength],
        'border-style': [4, cssBorderStyle],
        'border-top': [
            true, 'border-top-color', 'border-top-style', 'border-top-width'
        ],
        'border-top-color': cssColor,
        'border-top-style': cssBorderStyle,
        'border-top-width': cssWidth,
        'border-width': [4, cssWidth],
        bottom: [cssLength, 'auto'],
        'caption-side' : ['bottom', 'left', 'right', 'top'],
        clear: ['both', 'left', 'none', 'right'],
        clip: [cssShape, 'auto'],
        color: cssColor,
        content: [
            'open-quote', 'close-quote', 'no-open-quote', 'no-close-quote',
            cssString, cssUrl, cssCounter, cssAttr
        ],
        'counter-increment': [
            cssName, 'none'
        ],
        'counter-reset': [
            cssName, 'none'
        ],
        cursor: [
            cssUrl, 'auto', 'crosshair', 'default', 'e-resize', 'help', 'move',
            'n-resize', 'ne-resize', 'nw-resize', 'pointer', 's-resize',
            'se-resize', 'sw-resize', 'w-resize', 'text', 'wait'
        ],
        direction: ['ltr', 'rtl'],
        display: [
            'block', 'compact', 'inline', 'inline-block', 'inline-table',
            'list-item', 'marker', 'none', 'run-in', 'table', 'table-caption',
            'table-cell', 'table-column', 'table-column-group',
            'table-footer-group', 'table-header-group', 'table-row',
            'table-row-group'
        ],
        'empty-cells': ['show', 'hide'],
        'float': ['left', 'none', 'right'],
        font: [
            'caption', 'icon', 'menu', 'message-box', 'small-caption',
            'status-bar', true, 'font-size', 'font-style', 'font-weight',
            'font-family'
        ],
        'font-family': cssCommaList,
        'font-size': [
            'xx-small', 'x-small', 'small', 'medium', 'large', 'x-large',
            'xx-large', 'larger', 'smaller', cssLength
        ],
        'font-size-adjust': ['none', cssNumber],
        'font-stretch': [
            'normal', 'wider', 'narrower', 'ultra-condensed',
            'extra-condensed', 'condensed', 'semi-condensed',
            'semi-expanded', 'expanded', 'extra-expanded'
        ],
        'font-style': [
            'normal', 'italic', 'oblique'
        ],
        'font-variant': [
            'normal', 'small-caps'
        ],
        'font-weight': [
            'normal', 'bold', 'bolder', 'lighter', cssNumber
        ],
        height: [cssLength, 'auto'],
        left: [cssLength, 'auto'],
        'letter-spacing': ['normal', cssLength],
        'line-height': ['normal', cssLineHeight],
        'list-style': [
            true, 'list-style-image', 'list-style-position', 'list-style-type'
        ],
        'list-style-image': ['none', cssUrl],
        'list-style-position': ['inside', 'outside'],
        'list-style-type': [
            'circle', 'disc', 'square', 'decimal', 'decimal-leading-zero',
            'lower-roman', 'upper-roman', 'lower-greek', 'lower-alpha',
            'lower-latin', 'upper-alpha', 'upper-latin', 'hebrew', 'katakana',
            'hiragana-iroha', 'katakana-oroha', 'none'
        ],
        margin: [4, cssMargin],
        'margin-bottom': cssMargin,
        'margin-left': cssMargin,
        'margin-right': cssMargin,
        'margin-top': cssMargin,
        'marker-offset': [cssLength, 'auto'],
        'max-height': [cssLength, 'none'],
        'max-width': [cssLength, 'none'],
        'min-height': cssLength,
        'min-width': cssLength,
        opacity: cssNumber,
        outline: [true, 'outline-color', 'outline-style', 'outline-width'],
        'outline-color': ['invert', cssColor],
        'outline-style': [
            'dashed', 'dotted', 'double', 'groove', 'inset', 'none',
            'outset', 'ridge', 'solid'
        ],
        'outline-width': cssWidth,
        overflow: cssOverflow,
        'overflow-x': cssOverflow,
        'overflow-y': cssOverflow,
        padding: [4, cssLength],
        'padding-bottom': cssLength,
        'padding-left': cssLength,
        'padding-right': cssLength,
        'padding-top': cssLength,
        'page-break-after': cssBreak,
        'page-break-before': cssBreak,
        position: ['absolute', 'fixed', 'relative', 'static'],
        quotes: [8, cssString],
        right: [cssLength, 'auto'],
        'table-layout': ['auto', 'fixed'],
        'text-align': ['center', 'justify', 'left', 'right'],
        'text-decoration': [
            'none', 'underline', 'overline', 'line-through', 'blink'
        ],
        'text-indent': cssLength,
        'text-shadow': ['none', 4, [cssColor, cssLength]],
        'text-transform': ['capitalize', 'uppercase', 'lowercase', 'none'],
        top: [cssLength, 'auto'],
        'unicode-bidi': ['normal', 'embed', 'bidi-override'],
        'vertical-align': [
            'baseline', 'bottom', 'sub', 'super', 'top', 'text-top', 'middle',
            'text-bottom', cssLength
        ],
        visibility: ['visible', 'hidden', 'collapse'],
        'white-space': [
            'normal', 'nowrap', 'pre', 'pre-line', 'pre-wrap', 'inherit'
        ],
        width: [cssLength, 'auto'],
        'word-spacing': ['normal', cssLength],
        'word-wrap': ['break-word', 'normal'],
        'z-index': ['auto', cssNumber]
    };

    function styleAttribute() {
        var v;
        while (nexttoken.id === '*' || nexttoken.id === '#' ||
                nexttoken.value === '_') {
            if (!option.css) {
                warning("Unexpected '{a}'.", nexttoken, nexttoken.value);
            }
            advance();
        }
        if (nexttoken.id === '-') {
            if (!option.css) {
                warning("Unexpected '{a}'.", nexttoken, nexttoken.value);
            }
            advance('-');
            if (!nexttoken.identifier) {
                warning(
"Expected a non-standard style attribute and instead saw '{a}'.",
                    nexttoken, nexttoken.value);
            }
            advance();
            return cssAny;
        } else {
            if (!nexttoken.identifier) {
                warning("Excepted a style attribute, and instead saw '{a}'.",
                    nexttoken, nexttoken.value);
            } else {
                if (is_own(cssAttributeData, nexttoken.value)) {
                    v = cssAttributeData[nexttoken.value];
                } else {
                    v = cssAny;
                    if (!option.css) {
                        warning("Unrecognized style attribute '{a}'.",
                                nexttoken, nexttoken.value);
                    }
                }
            }
            advance();
            return v;
        }
    }


    function styleValue(v) {
        var i = 0,
            n,
            once,
            match,
            round,
            start = 0,
            vi;
        switch (typeof v) {
        case 'function':
            return v();
        case 'string':
            if (nexttoken.identifier && nexttoken.value === v) {
                advance();
                return true;
            }
            return false;
        }
        for (;;) {
            if (i >= v.length) {
                return false;
            }
            vi = v[i];
            i += 1;
            if (vi === true) {
                break;
            } else if (typeof vi === 'number') {
                n = vi;
                vi = v[i];
                i += 1;
            } else {
                n = 1;
            }
            match = false;
            while (n > 0) {
                if (styleValue(vi)) {
                    match = true;
                    n -= 1;
                } else {
                    break;
                }
            }
            if (match) {
                return true;
            }
        }
        start = i;
        once = [];
        for (;;) {
            round = false;
            for (i = start; i < v.length; i += 1) {
                if (!once[i]) {
                    if (styleValue(cssAttributeData[v[i]])) {
                        match = true;
                        round = true;
                        once[i] = true;
                        break;
                    }
                }
            }
            if (!round) {
                return match;
            }
        }
    }

    function styleChild() {
        if (nexttoken.id === '(number)') {
            advance();
            if (nexttoken.value === 'n' && nexttoken.identifier) {
                adjacent();
                advance();
                if (nexttoken.id === '+') {
                    adjacent();
                    advance('+');
                    adjacent();
                    advance('(number)');
                }
            }
            return;
        } else {
            switch (nexttoken.value) {
            case 'odd':
            case 'even':
                if (nexttoken.identifier) {
                    advance();
                    return;
                }
            }
        }
        warning("Unexpected token '{a}'.", nexttoken, nexttoken.value);
    }

    function substyle() {
        var v;
        for (;;) {
            if (nexttoken.id === '}' || nexttoken.id === '(end)' ||
                    xquote && nexttoken.id === xquote) {
                return;
            }
            while (nexttoken.id === ';') {
                warning("Misplaced ';'.");
                advance(';');
            }
            v = styleAttribute();
            advance(':');
            if (nexttoken.identifier && nexttoken.value === 'inherit') {
                advance();
            } else {
                if (!styleValue(v)) {
                    warning("Unexpected token '{a}'.", nexttoken,
                        nexttoken.value);
                    advance();
                }
            }
            if (nexttoken.id === '!') {
                advance('!');
                adjacent();
                if (nexttoken.identifier && nexttoken.value === 'important') {
                    advance();
                } else {
                    warning("Expected '{a}' and instead saw '{b}'.",
                        nexttoken, 'important', nexttoken.value);
                }
            }
            if (nexttoken.id === '}' || nexttoken.id === xquote) {
                warning("Missing '{a}'.", nexttoken, ';');
            } else {
                advance(';');
            }
        }
    }

    function styleSelector() {
        if (nexttoken.identifier) {
            if (!is_own(htmltag, option.cap ?
                    nexttoken.value.toLowerCase() : nexttoken.value)) {
                warning("Expected a tagName, and instead saw {a}.",
                    nexttoken, nexttoken.value);
            }
            advance();
        } else {
            switch (nexttoken.id) {
            case '>':
            case '+':
                advance();
                styleSelector();
                break;
            case ':':
                advance(':');
                switch (nexttoken.value) {
                case 'active':
                case 'after':
                case 'before':
                case 'checked':
                case 'disabled':
                case 'empty':
                case 'enabled':
                case 'first-child':
                case 'first-letter':
                case 'first-line':
                case 'first-of-type':
                case 'focus':
                case 'hover':
                case 'last-child':
                case 'last-of-type':
                case 'link':
                case 'only-of-type':
                case 'root':
                case 'target':
                case 'visited':
                    advance();
                    break;
                case 'lang':
                    advance();
                    advance('(');
                    if (!nexttoken.identifier) {
                        warning("Expected a lang code, and instead saw :{a}.",
                            nexttoken, nexttoken.value);
                    }
                    advance(')');
                    break;
                case 'nth-child':
                case 'nth-last-child':
                case 'nth-last-of-type':
                case 'nth-of-type':
                    advance();
                    advance('(');
                    styleChild();
                    advance(')');
                    break;
                case 'not':
                    advance();
                    advance('(');
                    if (nexttoken.id === ':' && peek(0).value === 'not') {
                        warning("Nested not.");
                    }
                    styleSelector();
                    advance(')');
                    break;
                default:
                    warning("Expected a pseudo, and instead saw :{a}.",
                        nexttoken, nexttoken.value);
                }
                break;
            case '#':
                advance('#');
                if (!nexttoken.identifier) {
                    warning("Expected an id, and instead saw #{a}.",
                        nexttoken, nexttoken.value);
                }
                advance();
                break;
            case '*':
                advance('*');
                break;
            case '.':
                advance('.');
                if (!nexttoken.identifier) {
                    warning("Expected a class, and instead saw #.{a}.",
                        nexttoken, nexttoken.value);
                }
                advance();
                break;
            case '[':
                advance('[');
                if (!nexttoken.identifier) {
                    warning("Expected an attribute, and instead saw [{a}].",
                        nexttoken, nexttoken.value);
                }
                advance();
                if (nexttoken.id === '=' || nexttoken.value === '~=' ||
                        nexttoken.value === '$=' ||
                        nexttoken.value === '|=' ||
                        nexttoken.id === '*=' ||
                        nexttoken.id === '^=') {
                    advance();
                    if (nexttoken.type !== '(string)') {
                        warning("Expected a string, and instead saw {a}.",
                            nexttoken, nexttoken.value);
                    }
                    advance();
                }
                advance(']');
                break;
            default:
                error("Expected a CSS selector, and instead saw {a}.",
                    nexttoken, nexttoken.value);
            }
        }
    }

    function stylePattern() {
        if (nexttoken.id === '{') {
            warning("Expected a style pattern, and instead saw '{a}'.", nexttoken,
                nexttoken.id);
        }
        for (;;) {
            styleSelector();
            if (nexttoken.id === '</' || nexttoken.id === '{' ||
                    nexttoken.id === '(end)') {
                return '';
            }
            if (nexttoken.id === ',') {
                comma();
            }
        }
    }

    function stylelist() {
        while (nexttoken.id !== '</' && nexttoken.id !== '(end)') {
            stylePattern();
            xmode = 'styleproperty';
            if (nexttoken.id === ';') {
                advance(';');
            } else {
                advance('{');
                substyle();
                xmode = 'style';
                advance('}');
            }
        }
    }

    function styles() {
        var i;
        while (nexttoken.id === '@') {
            i = peek();
            advance('@');
            if (nexttoken.identifier) {
                switch (nexttoken.value) {
                case 'import':
                    advance();
                    if (!cssUrl()) {
                        warning("Expected '{a}' and instead saw '{b}'.",
                            nexttoken, 'url', nexttoken.value);
                        advance();
                    }
                    advance(';');
                    break;
                case 'media':
                    advance();
                    for (;;) {
                        if (!nexttoken.identifier || cssMedia[nexttoken.value] === true) {
                            error("Expected a CSS media type, and instead saw '{a}'.", nexttoken, nexttoken.id);
                        }
                        advance();
                        if (nexttoken.id !== ',') {
                            break;
                        }
                        advance(',');
                    }
                    advance('{');
                    stylelist();
                    advance('}');
                    break;
                default:
                    warning("Expected an at-rule, and instead saw @{a}.",
                        nexttoken, nexttoken.value);
                }
            } else {
                warning("Expected an at-rule, and instead saw '{a}'.",
                    nexttoken, nexttoken.value);
            }
        }
        stylelist();
    }


// HTML parsing.

    function doBegin(n) {
        if (n !== 'html' && !option.fragment) {
            if (n === 'div' && option.adsafe) {
                error("ADSAFE: Use the fragment option.");
            } else {
                error("Expected '{a}' and instead saw '{b}'.",
                    token, 'html', n);
            }
        }
        if (option.adsafe) {
            if (n === 'html') {
                error(
"Currently, ADsafe does not operate on whole HTML documents. It operates on <div> fragments and .js files.", token);
            }
            if (option.fragment) {
                if (n !== 'div') {
                    error("ADsafe violation: Wrap the widget in a div.", token);
                }
            } else {
                error("Use the fragment option.", token);
            }
        }
        option.browser = true;
        assume();
    }

    function doAttribute(n, a, v) {
        var u, x;
        if (a === 'id') {
            u = typeof v === 'string' ? v.toUpperCase() : '';
            if (ids[u] === true) {
                warning("Duplicate id='{a}'.", nexttoken, v);
            }
            if (!/^[A-Za-z][A-Za-z0-9._:\-]*$/.test(v)) {
                warning("Bad id: '{a}'.", nexttoken, v);
            } else if (option.adsafe) {
                if (adsafe_id) {
                    if (v.slice(0, adsafe_id.length) !== adsafe_id) {
                        warning("ADsafe violation: An id must have a '{a}' prefix",
                                nexttoken, adsafe_id);
                    } else if (!/^[A-Z]+_[A-Z]+$/.test(v)) {
                        warning("ADSAFE violation: bad id.");
                    }
                } else {
                    adsafe_id = v;
                    if (!/^[A-Z]+_$/.test(v)) {
                        warning("ADSAFE violation: bad id.");
                    }
                }
            }
            x = v.search(dx);
            if (x >= 0) {
                warning("Unexpected character '{a}' in {b}.", token, v.charAt(x), a);
            }
            ids[u] = true;
        } else if (a === 'class' || a === 'type' || a === 'name') {
            x = v.search(qx);
            if (x >= 0) {
                warning("Unexpected character '{a}' in {b}.", token, v.charAt(x), a);
            }
            ids[u] = true;
        } else if (a === 'href' || a === 'background' ||
                a === 'content' || a === 'data' ||
                a.indexOf('src') >= 0 || a.indexOf('url') >= 0) {
            if (option.safe && ux.test(v)) {
                error("ADsafe URL violation.");
            }
            urls.push(v);
        } else if (a === 'for') {
            if (option.adsafe) {
                if (adsafe_id) {
                    if (v.slice(0, adsafe_id.length) !== adsafe_id) {
                        warning("ADsafe violation: An id must have a '{a}' prefix",
                                nexttoken, adsafe_id);
                    } else if (!/^[A-Z]+_[A-Z]+$/.test(v)) {
                        warning("ADSAFE violation: bad id.");
                    }
                } else {
                    warning("ADSAFE violation: bad id.");
                }
            }
        } else if (a === 'name') {
            if (option.adsafe && v.indexOf('_') >= 0) {
                warning("ADsafe name violation.");
            }
        }
    }

    function doTag(n, a) {
        var i, t = htmltag[n], x;
        src = false;
        if (!t) {
            error("Unrecognized tag '<{a}>'.",
                    nexttoken,
                    n === n.toLowerCase() ? n :
                        n + ' (capitalization error)');
        }
        if (stack.length > 0) {
            if (n === 'html') {
                error("Too many <html> tags.", token);
            }
            x = t.parent;
            if (x) {
                if (x.indexOf(' ' + stack[stack.length - 1].name + ' ') < 0) {
                    error("A '<{a}>' must be within '<{b}>'.",
                            token, n, x);
                }
            } else if (!option.adsafe && !option.fragment) {
                i = stack.length;
                do {
                    if (i <= 0) {
                        error("A '<{a}>' must be within '<{b}>'.",
                                token, n, 'body');
                    }
                    i -= 1;
                } while (stack[i].name !== 'body');
            }
        }
        switch (n) {
        case 'div':
            if (option.adsafe && stack.length === 1 && !adsafe_id) {
                warning("ADSAFE violation: missing ID_.");
            }
            break;
        case 'script':
            xmode = 'script';
            advance('>');
            indent = nexttoken.from;
            if (a.lang) {
                warning("lang is deprecated.", token);
            }
            if (option.adsafe && stack.length !== 1) {
                warning("ADsafe script placement violation.", token);
            }
            if (a.src) {
                if (option.adsafe && (!adsafe_may || !approved[a.src])) {
                    warning("ADsafe unapproved script source.", token);
                }
                if (a.type) {
                    warning("type is unnecessary.", token);
                }
            } else {
                if (adsafe_went) {
                    error("ADsafe script violation.", token);
                }
                statements('script');
            }
            xmode = 'html';
            advance('</');
            if (!nexttoken.identifier && nexttoken.value !== 'script') {
                warning("Expected '{a}' and instead saw '{b}'.",
                        nexttoken, 'script', nexttoken.value);
            }
            advance();
            xmode = 'outer';
            break;
        case 'style':
            xmode = 'style';
            advance('>');
            styles();
            xmode = 'html';
            advance('</');
            if (!nexttoken.identifier && nexttoken.value !== 'style') {
                warning("Expected '{a}' and instead saw '{b}'.",
                        nexttoken, 'style', nexttoken.value);
            }
            advance();
            xmode = 'outer';
            break;
        case 'input':
            switch (a.type) {
            case 'radio':
            case 'checkbox':
            case 'button':
            case 'reset':
            case 'submit':
                break;
            case 'text':
            case 'file':
            case 'password':
            case 'file':
            case 'hidden':
            case 'image':
                if (option.adsafe && a.autocomplete !== 'off') {
                    warning("ADsafe autocomplete violation.");
                }
                break;
            default:
                warning("Bad input type.");
            }
            break;
        case 'applet':
        case 'body':
        case 'embed':
        case 'frame':
        case 'frameset':
        case 'head':
        case 'iframe':
        case 'noembed':
        case 'noframes':
        case 'object':
        case 'param':
            if (option.adsafe) {
                warning("ADsafe violation: Disallowed tag: " + n);
            }
            break;
        }
    }


    function closetag(n) {
        return '</' + n + '>';
    }

    function html() {
        var a, attributes, e, n, q, t, v, w = option.white, wmode;
        xmode = 'html';
        xquote = '';
        stack = null;
        for (;;) {
            switch (nexttoken.value) {
            case '<':
                xmode = 'html';
                advance('<');
                attributes = {};
                t = nexttoken;
                if (!t.identifier) {
                    warning("Bad identifier {a}.", t, t.value);
                }
                n = t.value;
                if (option.cap) {
                    n = n.toLowerCase();
                }
                t.name = n;
                advance();
                if (!stack) {
                    stack = [];
                    doBegin(n);
                }
                v = htmltag[n];
                if (typeof v !== 'object') {
                    error("Unrecognized tag '<{a}>'.", t, n);
                }
                e = v.empty;
                t.type = n;
                for (;;) {
                    if (nexttoken.id === '/') {
                        advance('/');
                        if (nexttoken.id !== '>') {
                            warning("Expected '{a}' and instead saw '{b}'.",
                                    nexttoken, '>', nexttoken.value);
                        }
                        break;
                    }
                    if (nexttoken.id && nexttoken.id.substr(0, 1) === '>') {
                        break;
                    }
                    if (!nexttoken.identifier) {
                        if (nexttoken.id === '(end)' || nexttoken.id === '(error)') {
                            error("Missing '>'.", nexttoken);
                        }
                        warning("Bad identifier.");
                    }
                    option.white = true;
                    nonadjacent(token, nexttoken);
                    a = nexttoken.value;
                    option.white = w;
                    advance();
                    if (!option.cap && a !== a.toLowerCase()) {
                        warning("Attribute '{a}' not all lower case.", nexttoken, a);
                    }
                    a = a.toLowerCase();
                    xquote = '';
                    if (is_own(attributes, a)) {
                        warning("Attribute '{a}' repeated.", nexttoken, a);
                    }
                    if (a.slice(0, 2) === 'on') {
                        if (!option.on) {
                            warning("Avoid HTML event handlers.");
                        }
                        xmode = 'scriptstring';
                        advance('=');
                        q = nexttoken.id;
                        if (q !== '"' && q !== "'") {
                            error("Missing quote.");
                        }
                        xquote = q;
                        wmode = option.white;
                        option.white = false;
                        advance(q);
                        statements('on');
                        option.white = wmode;
                        if (nexttoken.id !== q) {
                            error("Missing close quote on script attribute.");
                        }
                        xmode = 'html';
                        xquote = '';
                        advance(q);
                        v = false;
                    } else if (a === 'style') {
                        xmode = 'scriptstring';
                        advance('=');
                        q = nexttoken.id;
                        if (q !== '"' && q !== "'") {
                            error("Missing quote.");
                        }
                        xmode = 'styleproperty';
                        xquote = q;
                        advance(q);
                        substyle();
                        xmode = 'html';
                        xquote = '';
                        advance(q);
                        v = false;
                    } else {
                        if (nexttoken.id === '=') {
                            advance('=');
                            v = nexttoken.value;
                            if (!nexttoken.identifier &&
                                    nexttoken.id !== '"' &&
                                    nexttoken.id !== '\'' &&
                                    nexttoken.type !== '(string)' &&
                                    nexttoken.type !== '(number)' &&
                                    nexttoken.type !== '(color)') {
                                warning("Expected an attribute value and instead saw '{a}'.", token, a);
                            }
                            advance();
                        } else {
                            v = true;
                        }
                    }
                    attributes[a] = v;
                    doAttribute(n, a, v);
                }
                doTag(n, attributes);
                if (!e) {
                    stack.push(t);
                }
                xmode = 'outer';
                advance('>');
                break;
            case '</':
                xmode = 'html';
                advance('</');
                if (!nexttoken.identifier) {
                    warning("Bad identifier.");
                }
                n = nexttoken.value;
                if (option.cap) {
                    n = n.toLowerCase();
                }
                advance();
                if (!stack) {
                    error("Unexpected '{a}'.", nexttoken, closetag(n));
                }
                t = stack.pop();
                if (!t) {
                    error("Unexpected '{a}'.", nexttoken, closetag(n));
                }
                if (t.name !== n) {
                    error("Expected '{a}' and instead saw '{b}'.",
                            nexttoken, closetag(t.name), closetag(n));
                }
                if (nexttoken.id !== '>') {
                    error("Missing '{a}'.", nexttoken, '>');
                }
                xmode = 'outer';
                advance('>');
                break;
            case '<!':
                if (option.safe) {
                    warning("ADsafe HTML violation.");
                }
                xmode = 'html';
                for (;;) {
                    advance();
                    if (nexttoken.id === '>' || nexttoken.id === '(end)') {
                        break;
                    }
                    if (nexttoken.value.indexOf('--') >= 0) {
                        error("Unexpected --.");
                    }
                    if (nexttoken.value.indexOf('<') >= 0) {
                        error("Unexpected <.");
                    }
                    if (nexttoken.value.indexOf('>') >= 0) {
                        error("Unexpected >.");
                    }
                }
                xmode = 'outer';
                advance('>');
                break;
            case '(end)':
                return;
            default:
                if (nexttoken.id === '(end)') {
                    error("Missing '{a}'.", nexttoken,
                            '</' + stack[stack.length - 1].value + '>');
                } else {
                    advance();
                }
            }
            if (stack && stack.length === 0 && (option.adsafe ||
                    !option.fragment || nexttoken.id === '(end)')) {
                break;
            }
        }
        if (nexttoken.id !== '(end)') {
            error("Unexpected material after the end.");
        }
    }


// Build the syntax table by declaring the syntactic elements of the language.

    type('(number)', function () {
        return this;
    });
    type('(string)', function () {
        return this;
    });

    syntax['(identifier)'] = {
        type: '(identifier)',
        lbp: 0,
        identifier: true,
        nud: function () {
            var v = this.value,
                s = scope[v],
                f;
            if (typeof s === 'function') {

// Protection against accidental inheritance.

                s = undefined;
            } else if (typeof s === 'boolean') {
                f = funct;
                funct = functions[0];
                addlabel(v, 'var');
                s = funct;
                funct = f;
            }

// The name is in scope and defined in the current function.

            if (funct === s) {

//      Change 'unused' to 'var', and reject labels.

                switch (funct[v]) {
                case 'unused':
                    funct[v] = 'var';
                    break;
                case 'unction':
                    funct[v] = 'function';
                    this['function'] = true;
                    break;
                case 'function':
                    this['function'] = true;
                    break;
                case 'label':
                    warning("'{a}' is a statement label.", token, v);
                    break;
                }

// The name is not defined in the function.  If we are in the global scope,
// then we have an undefined variable.

            } else if (funct['(global)']) {
                if (option.undef && typeof predefined[v] !== 'boolean') {
                    warning("'{a}' is not defined.", token, v);
                }
                note_implied(token);

// If the name is already defined in the current
// function, but not as outer, then there is a scope error.

            } else {
                switch (funct[v]) {
                case 'closure':
                case 'function':
                case 'var':
                case 'unused':
                    warning("'{a}' used out of scope.", token, v);
                    break;
                case 'label':
                    warning("'{a}' is a statement label.", token, v);
                    break;
                case 'outer':
                case 'global':
                    break;
                default:

// If the name is defined in an outer function, make an outer entry, and if
// it was unused, make it var.

                    if (s === true) {
                        funct[v] = true;
                    } else if (s === null) {
                        warning("'{a}' is not allowed.", token, v);
                        note_implied(token);
                    } else if (typeof s !== 'object') {
                        if (option.undef) {
                            warning("'{a}' is not defined.", token, v);
                        } else {
                            funct[v] = true;
                        }
                        note_implied(token);
                    } else {
                        switch (s[v]) {
                        case 'function':
                        case 'unction':
                            this['function'] = true;
                            s[v] = 'closure';
                            funct[v] = s['(global)'] ? 'global' : 'outer';
                            break;
                        case 'var':
                        case 'unused':
                            s[v] = 'closure';
                            funct[v] = s['(global)'] ? 'global' : 'outer';
                            break;
                        case 'closure':
                        case 'parameter':
                            funct[v] = s['(global)'] ? 'global' : 'outer';
                            break;
                        case 'label':
                            warning("'{a}' is a statement label.", token, v);
                        }
                    }
                }
            }
            return this;
        },
        led: function () {
            error("Expected an operator and instead saw '{a}'.",
                nexttoken, nexttoken.value);
        }
    };

    type('(regexp)', function () {
        return this;
    });


// ECMAScript parser

    delim('(endline)');
    delim('(begin)');
    delim('(end)').reach = true;
    delim('</').reach = true;
    delim('<!');
    delim('<!--');
    delim('-->');
    delim('(error)').reach = true;
    delim('}').reach = true;
    delim(')');
    delim(']');
    delim('"').reach = true;
    delim("'").reach = true;
    delim(';');
    delim(':').reach = true;
    delim(',');
    delim('#');
    delim('@');
    reserve('else');
    reserve('case').reach = true;
    reserve('catch');
    reserve('default').reach = true;
    reserve('finally');
    reservevar('arguments', function (x) {
        if (strict_mode && funct['(global)']) {
            warning("Strict violation.", x);
        } else if (option.safe) {
            warning("ADsafe violation.", x);
        }
    });
    reservevar('eval', function (x) {
        if (option.safe) {
            warning("ADsafe violation.", x);
        }
    });
    reservevar('false');
    reservevar('Infinity');
    reservevar('NaN');
    reservevar('null');
    reservevar('this', function (x) {
        if (strict_mode && ((funct['(statement)'] &&
                funct['(name)'].charAt(0) > 'Z') || funct['(global)'])) {
            warning("Strict violation.", x);
        } else if (option.safe) {
            warning("ADsafe violation.", x);
        }
    });
    reservevar('true');
    reservevar('undefined');
    assignop('=', 'assign', 20);
    assignop('+=', 'assignadd', 20);
    assignop('-=', 'assignsub', 20);
    assignop('*=', 'assignmult', 20);
    assignop('/=', 'assigndiv', 20).nud = function () {
        error("A regular expression literal can be confused with '/='.");
    };
    assignop('%=', 'assignmod', 20);
    bitwiseassignop('&=', 'assignbitand', 20);
    bitwiseassignop('|=', 'assignbitor', 20);
    bitwiseassignop('^=', 'assignbitxor', 20);
    bitwiseassignop('<<=', 'assignshiftleft', 20);
    bitwiseassignop('>>=', 'assignshiftright', 20);
    bitwiseassignop('>>>=', 'assignshiftrightunsigned', 20);
    infix('?', function (left, that) {
        that.left = left;
        that.right = parse(10);
        advance(':');
        that['else'] = parse(10);
        return that;
    }, 30);

    infix('||', 'or', 40);
    infix('&&', 'and', 50);
    bitwise('|', 'bitor', 70);
    bitwise('^', 'bitxor', 80);
    bitwise('&', 'bitand', 90);
    relation('==', function (left, right) {
        if (option.eqeqeq) {
            warning("Expected '{a}' and instead saw '{b}'.",
                    this, '===', '==');
        } else if (isPoorRelation(left)) {
            warning("Use '{a}' to compare with '{b}'.",
                this, '===', left.value);
        } else if (isPoorRelation(right)) {
            warning("Use '{a}' to compare with '{b}'.",
                this, '===', right.value);
        }
        return this;
    });
    relation('===');
    relation('!=', function (left, right) {
        if (option.eqeqeq) {
            warning("Expected '{a}' and instead saw '{b}'.",
                    this, '!==', '!=');
        } else if (isPoorRelation(left)) {
            warning("Use '{a}' to compare with '{b}'.",
                    this, '!==', left.value);
        } else if (isPoorRelation(right)) {
            warning("Use '{a}' to compare with '{b}'.",
                    this, '!==', right.value);
        }
        return this;
    });
    relation('!==');
    relation('<');
    relation('>');
    relation('<=');
    relation('>=');
    bitwise('<<', 'shiftleft', 120);
    bitwise('>>', 'shiftright', 120);
    bitwise('>>>', 'shiftrightunsigned', 120);
    infix('in', 'in', 120);
    infix('instanceof', 'instanceof', 120);
    infix('+', function (left, that) {
        var right = parse(130);
        if (left && right && left.id === '(string)' && right.id === '(string)') {
            left.value += right.value;
            left.character = right.character;
            if (jx.test(left.value)) {
                warning("JavaScript URL.", left);
            }
            return left;
        }
        that.left = left;
        that.right = right;
        return that;
    }, 130);
    prefix('+', 'num');
    prefix('+++', function () {
        warning("Confusing pluses.");
        this.right = parse(150);
        this.arity = 'unary';
        return this;
    });
    infix('+++', function (left) {
        warning("Confusing pluses.");
        this.left = left;
        this.right = parse(130);
        return this;
    }, 130);
    infix('-', 'sub', 130);
    prefix('-', 'neg');
    prefix('---', function () {
        warning("Confusing minuses.");
        this.right = parse(150);
        this.arity = 'unary';
        return this;
    });
    infix('---', function (left) {
        warning("Confusing minuses.");
        this.left = left;
        this.right = parse(130);
        return this;
    }, 130);
    infix('*', 'mult', 140);
    infix('/', 'div', 140);
    infix('%', 'mod', 140);

    suffix('++', 'postinc');
    prefix('++', 'preinc');
    syntax['++'].exps = true;

    suffix('--', 'postdec');
    prefix('--', 'predec');
    syntax['--'].exps = true;
    prefix('delete', function () {
        var p = parse(0);
        if (!p || (p.id !== '.' && p.id !== '[')) {
            warning("Variables should not be deleted.");
        }
        this.first = p;
        return this;
    }).exps = true;


    prefix('~', function () {
        if (option.bitwise) {
            warning("Unexpected '{a}'.", this, '~');
        }
        parse(150);
        return this;
    });
    prefix('!', function () {
        this.right = parse(150);
        this.arity = 'unary';
        if (bang[this.right.id] === true) {
            warning("Confusing use of '{a}'.", this, '!');
        }
        return this;
    });
    prefix('typeof', 'typeof');
    prefix('new', function () {
        var c = parse(155), i;
        if (c && c.id !== 'function') {
            if (c.identifier) {
                c['new'] = true;
                switch (c.value) {
                case 'Object':
                    warning("Use the object literal notation {}.", token);
                    break;
                case 'Array':
                    if (nexttoken.id !== '(') {
                        warning("Use the array literal notation [].", token);
                    } else {
                        advance('(');
                        if (nexttoken.id === ')') {
                            warning("Use the array literal notation [].", token);
                        } else {
                            i = parse(0);
                            c.dimension = i;
                            if ((i.id === '(number)' && /[.+\-Ee]/.test(i.value)) ||
                                    (i.id === '-' && !i.right) ||
                                    i.id === '(string)' || i.id === '[' ||
                                    i.id === '{' || i.id === 'true' ||
                                    i.id === 'false' ||
                                    i.id === 'null' || i.id === 'undefined' ||
                                    i.id === 'Infinity') {
                                warning("Use the array literal notation [].", token);
                            }
                            if (nexttoken.id !== ')') {
                                error("Use the array literal notation [].", token);
                            }
                        }
                        advance(')');
                    }
                    this.first = c;
                    return this;
                case 'Number':
                case 'String':
                case 'Boolean':
                case 'Math':
                case 'JSON':
                    warning("Do not use {a} as a constructor.", token, c.value);
                    break;
                case 'Function':
                    if (!option.evil) {
                        warning("The Function constructor is eval.");
                    }
                    break;
                case 'Date':
                case 'RegExp':
                    break;
                default:
                    if (c.id !== 'function') {
                        i = c.value.substr(0, 1);
                        if (option.newcap && (i < 'A' || i > 'Z')) {
                            warning(
                    "A constructor name should start with an uppercase letter.",
                                token);
                        }
                    }
                }
            } else {
                if (c.id !== '.' && c.id !== '[' && c.id !== '(') {
                    warning("Bad constructor.", token);
                }
            }
        } else {
            warning("Weird construction. Delete 'new'.", this);
        }
        adjacent(token, nexttoken);
        if (nexttoken.id !== '(') {
            warning("Missing '()' invoking a constructor.");
        }
        this.first = c;
        return this;
    });
    syntax['new'].exps = true;

    infix('.', function (left, that) {
        adjacent(prevtoken, token);
        nobreak();
        var m = identifier();
        if (typeof m === 'string') {
            countMember(m);
        }
        that.left = left;
        that.right = m;
        if (left && left.value === 'arguments' &&
                (m === 'callee' || m === 'caller')) {
            warning("Avoid arguments.{a}.", left, m);
        } else if (!option.evil && left && left.value === 'document' &&
                (m === 'write' || m === 'writeln')) {
            warning("document.write can be a form of eval.", left);
        } else if (option.adsafe) {
            if (left && left.value === 'ADSAFE') {
                if (m === 'id' || m === 'lib') {
                    warning("ADsafe violation.", that);
                } else if (m === 'go') {
                    if (xmode !== 'script') {
                        warning("ADsafe violation.", that);
                    } else if (adsafe_went || nexttoken.id !== '(' ||
                            peek(0).id !== '(string)' ||
                            peek(0).value !== adsafe_id ||
                            peek(1).id !== ',') {
                        error("ADsafe violation: go.", that);
                    }
                    adsafe_went = true;
                    adsafe_may = false;
                }
            }
        }
        if (!option.evil && (m === 'eval' || m === 'execScript')) {
            warning('eval is evil.');
        } else if (option.safe) {
            for (;;) {
                if (banned[m] === true) {
                    warning("ADsafe restricted word '{a}'.", token, m);
                }
                if (typeof predefined[left.value] !== 'boolean' ||
                        nexttoken.id === '(') {
                    break;
                }
                if (standard_member[m] === true) {
                    if (nexttoken.id === '.') {
                        warning("ADsafe violation.", that);
                    }
                    break;
                }
                if (nexttoken.id !== '.') {
                    warning("ADsafe violation.", that);
                    break;
                }
                advance('.');
                token.left = that;
                token.right = m;
                that = token;
                m = identifier();
                if (typeof m === 'string') {
                    countMember(m);
                }
            }
        }
        return that;
    }, 160, true);

    infix('(', function (left, that) {
        if (prevtoken.id !== '}' && prevtoken.id !== ')') {
            nobreak(prevtoken, token);
        }
        nospace();
        if (option.immed && !left.immed && left.id === 'function') {
            warning("Wrap an immediate function invocation in parentheses " +
                "to assist the reader in understanding that the expression " +
                "is the result of a function, and not the function itself.");
        }
        var n = 0,
            p = [];
        if (left) {
            if (left.type === '(identifier)') {
                if (left.value.match(/^[A-Z]([A-Z0-9_$]*[a-z][A-Za-z0-9_$]*)?$/)) {
                    if (left.value !== 'Number' && left.value !== 'String' &&
                            left.value !== 'Boolean' &&
                            left.value !== 'Date') {
                        if (left.value === 'Math') {
                            warning("Math is not a function.", left);
                        } else if (option.newcap) {
                            warning(
"Missing 'new' prefix when invoking a constructor.", left);
                        }
                    }
                }
            } else if (left.id === '.') {
                if (option.safe && left.left.value === 'Math' &&
                        left.right === 'random') {
                    warning("ADsafe violation.", left);
                }
            }
        }
        if (nexttoken.id !== ')') {
            for (;;) {
                p[p.length] = parse(10);
                n += 1;
                if (nexttoken.id !== ',') {
                    break;
                }
                comma();
            }
        }
        advance(')');
        nospace(prevtoken, token);
        if (typeof left === 'object') {
            if (left.value === 'parseInt' && n === 1) {
                warning("Missing radix parameter.", left);
            }
            if (!option.evil) {
                if (left.value === 'eval' || left.value === 'Function' ||
                        left.value === 'execScript') {
                    warning("eval is evil.", left);
                } else if (p[0] && p[0].id === '(string)' &&
                       (left.value === 'setTimeout' ||
                        left.value === 'setInterval')) {
                    warning(
    "Implied eval is evil. Pass a function instead of a string.", left);
                }
            }
            if (!left.identifier && left.id !== '.' && left.id !== '[' &&
                    left.id !== '(' && left.id !== '&&' && left.id !== '||' &&
                    left.id !== '?') {
                warning("Bad invocation.", left);
            }
        }
        that.left = left;
        return that;
    }, 155, true).exps = true;

    prefix('(', function () {
        nospace();
        if (nexttoken.id === 'function') {
            nexttoken.immed = true;
        }
        var v = parse(0);
        advance(')', this);
        nospace(prevtoken, token);
        if (option.immed && v.id === 'function') {
            if (nexttoken.id === '(') {
                warning(
"Move the invocation into the parens that contain the function.", nexttoken);
            } else {
                warning(
"Do not wrap function literals in parens unless they are to be immediately invoked.",
                        this);
            }
        }
        return v;
    });

    infix('[', function (left, that) {
        nobreak(prevtoken, token);
        nospace();
        var e = parse(0), s;
        if (e && e.type === '(string)') {
            if (option.safe && banned[e.value] === true) {
                warning("ADsafe restricted word '{a}'.", that, e.value);
            } else if (!option.evil &&
                    (e.value === 'eval' || e.value === 'execScript')) {
                warning("eval is evil.", that);
            } else if (option.safe &&
                    (e.value.charAt(0) === '_' || e.value.charAt(0) === '-')) {
                warning("ADsafe restricted subscript '{a}'.", that, e.value);
            }
            countMember(e.value);
            if (!option.sub && ix.test(e.value)) {
                s = syntax[e.value];
                if (!s || !s.reserved) {
                    warning("['{a}'] is better written in dot notation.",
                            e, e.value);
                }
            }
        } else if (!e || e.type !== '(number)' || e.value < 0) {
            if (option.safe) {
                warning('ADsafe subscripting.');
            }
        }
        advance(']', that);
        nospace(prevtoken, token);
        that.left = left;
        that.right = e;
        return that;
    }, 160, true);

    prefix('[', function () {
        var b = token.line !== nexttoken.line;
        this.first = [];
        if (b) {
            indent += option.indent;
            if (nexttoken.from === indent + option.indent) {
                indent += option.indent;
            }
        }
        while (nexttoken.id !== '(end)') {
            while (nexttoken.id === ',') {
                warning("Extra comma.");
                advance(',');
            }
            if (nexttoken.id === ']') {
                break;
            }
            if (b && token.line !== nexttoken.line) {
                indentation();
            }
            this.first.push(parse(10));
            if (nexttoken.id === ',') {
                comma();
                if (nexttoken.id === ']' && !option.es5) {
                    warning("Extra comma.", token);
                    break;
                }
            } else {
                break;
            }
        }
        if (b) {
            indent -= option.indent;
            indentation();
        }
        advance(']', this);
        return this;
    }, 160);


    function property_name() {
        var id = optionalidentifier(true);
        if (!id) {
            if (nexttoken.id === '(string)') {
                id = nexttoken.value;
                if (option.adsafe &&
                        (id.charAt(0) === '_' ||
                         id.charAt(id.length - 1) === '_')) {
                    warning("Unexpected {a} in '{b}'.", token,
                        "dangling '_'", id);
                }
                advance();
            } else if (nexttoken.id === '(number)') {
                id = nexttoken.value.toString();
                advance();
            }
        }
        return id;
    }


    function functionparams() {
        var i, t = nexttoken, p = [];
        advance('(');
        nospace();
        if (nexttoken.id === ')') {
            advance(')');
            nospace(prevtoken, token);
            return;
        }
        for (;;) {
            i = identifier();
            p.push(i);
            addlabel(i, 'parameter');
            if (nexttoken.id === ',') {
                comma();
            } else {
                advance(')', t);
                nospace(prevtoken, token);
                return p;
            }
        }
    }


    function doFunction(i, statement) {
        var f, s = scope;
        scope = Object.create(s);
        funct = {
            '(name)'     : i || '"' + anonname + '"',
            '(line)'     : nexttoken.line,
            '(context)'  : funct,
            '(breakage)' : 0,
            '(loopage)'  : 0,
            '(scope)'    : scope,
            '(statement)': statement
        };
        f = funct;
        token.funct = funct;
        functions.push(funct);
        if (i) {
            addlabel(i, 'function');
        }
        funct['(params)'] = functionparams();

        block(false);
        scope = s;
        funct['(last)'] = token.line;
        funct = funct['(context)'];
        return f;
    }


    (function (x) {
        x.nud = function () {
            var b, f, i, j, p, seen = {}, t;
            b = token.line !== nexttoken.line;
            if (b) {
                indent += option.indent;
                if (nexttoken.from === indent + option.indent) {
                    indent += option.indent;
                }
            }
            for (;;) {
                if (nexttoken.id === '}') {
                    break;
                }
                if (b) {
                    indentation();
                }
                if (nexttoken.value === 'get' && peek().id !== ':') {
                    advance('get');
                    if (!option.es5) {
                        error("get/set are ES5 features.");
                    }
                    i = property_name();
                    if (!i) {
                        error("Missing property name.");
                    }
                    t = nexttoken;
                    adjacent(token, nexttoken);
                    f = doFunction(i);
                    if (funct['(loopage)']) {
                        warning("Don't make functions within a loop.", t);
                    }
                    p = f['(params)'];
                    if (p) {
                        warning("Unexpected parameter '{a}' in get {b} function.", t, p[0], i);
                    }
                    adjacent(token, nexttoken);
                    advance(',');
                    indentation();
                    advance('set');
                    j = property_name();
                    if (i !== j) {
                        error("Expected {a} and instead saw {b}.", token, i, j);
                    }
                    t = nexttoken;
                    adjacent(token, nexttoken);
                    f = doFunction(i);
                    p = f['(params)'];
                    if (!p || p.length !== 1 || p[0] !== 'value') {
                        warning("Expected (value) in set {a} function.", t, i);
                    }
                } else {
                    i = property_name();
                    if (typeof i !== 'string') {
                        break;
                    }
                    advance(':');
                    nonadjacent(token, nexttoken);
                    parse(10);
                }
                if (seen[i] === true) {
                    warning("Duplicate member '{a}'.", nexttoken, i);
                }
                seen[i] = true;
                countMember(i);
                if (nexttoken.id === ',') {
                    comma();
                    if (nexttoken.id === ',') {
                        warning("Extra comma.", token);
                    } else if (nexttoken.id === '}' && !option.es5) {
                        warning("Extra comma.", token);
                    }
                } else {
                    break;
                }
            }
            if (b) {
                indent -= option.indent;
                indentation();
            }
            advance('}', this);
            return this;
        };
        x.fud = function () {
            error("Expected to see a statement and instead saw a block.", token);
        };
    }(delim('{')));


    var varstatement = function varstatement(prefix) {

// JavaScript does not have block scope. It only has function scope. So,
// declaring a variable in a block can have unexpected consequences.

        var id, name, value;

        if (funct['(onevar)'] && option.onevar) {
            warning("Too many var statements.");
        } else if (!funct['(global)']) {
            funct['(onevar)'] = true;
        }
        this.first = [];
        for (;;) {
            nonadjacent(token, nexttoken);
            id = identifier();
            if (funct['(global)'] && predefined[id] === false) {
                warning("Redefinition of '{a}'.", token, id);
            }
            addlabel(id, 'unused');
            if (prefix) {
                break;
            }
            name = token;
            this.first.push(token);
            if (nexttoken.id === '=') {
                nonadjacent(token, nexttoken);
                advance('=');
                nonadjacent(token, nexttoken);
                if (nexttoken.id === 'undefined') {
                    warning("It is not necessary to initialize '{a}' to 'undefined'.", token, id);
                }
                if (peek(0).id === '=' && nexttoken.identifier) {
                    error("Variable {a} was not declared correctly.",
                            nexttoken, nexttoken.value);
                }
                value = parse(0);
                name.first = value;
            }
            if (nexttoken.id !== ',') {
                break;
            }
            comma();
        }
        return this;
    };


    stmt('var', varstatement).exps = true;


    blockstmt('function', function () {
        if (inblock) {
            warning(
"Function statements cannot be placed in blocks. Use a function expression or move the statement to the top of the outer function.", token);

        }
        var i = identifier();
        adjacent(token, nexttoken);
        addlabel(i, 'unction');
        doFunction(i, true);
        if (nexttoken.id === '(' && nexttoken.line === token.line) {
            error(
"Function statements are not invocable. Wrap the whole function invocation in parens.");
        }
        return this;
    });

    prefix('function', function () {
        var i = optionalidentifier();
        if (i) {
            adjacent(token, nexttoken);
        } else {
            nonadjacent(token, nexttoken);
        }
        doFunction(i);
        if (funct['(loopage)']) {
            warning("Don't make functions within a loop.");
        }
        return this;
    });

    blockstmt('if', function () {
        var t = nexttoken;
        advance('(');
        nonadjacent(this, t);
        nospace();
        parse(20);
        if (nexttoken.id === '=') {
            warning("Expected a conditional expression and instead saw an assignment.");
            advance('=');
            parse(20);
        }
        advance(')', t);
        nospace(prevtoken, token);
        block(true);
        if (nexttoken.id === 'else') {
            nonadjacent(token, nexttoken);
            advance('else');
            if (nexttoken.id === 'if' || nexttoken.id === 'switch') {
                statement(true);
            } else {
                block(true);
            }
        }
        return this;
    });

    blockstmt('try', function () {
        var b, e, s;
        if (option.adsafe) {
            warning("ADsafe try violation.", this);
        }
        block(false);
        if (nexttoken.id === 'catch') {
            advance('catch');
            nonadjacent(token, nexttoken);
            advance('(');
            s = scope;
            scope = Object.create(s);
            e = nexttoken.value;
            if (nexttoken.type !== '(identifier)') {
                warning("Expected an identifier and instead saw '{a}'.",
                    nexttoken, e);
            } else {
                addlabel(e, 'exception');
            }
            advance();
            advance(')');
            block(false);
            b = true;
            scope = s;
        }
        if (nexttoken.id === 'finally') {
            advance('finally');
            block(false);
            return;
        } else if (!b) {
            error("Expected '{a}' and instead saw '{b}'.",
                    nexttoken, 'catch', nexttoken.value);
        }
        return this;
    });

    blockstmt('while', function () {
        var t = nexttoken;
        funct['(breakage)'] += 1;
        funct['(loopage)'] += 1;
        advance('(');
        nonadjacent(this, t);
        nospace();
        parse(20);
        if (nexttoken.id === '=') {
            warning("Expected a conditional expression and instead saw an assignment.");
            advance('=');
            parse(20);
        }
        advance(')', t);
        nospace(prevtoken, token);
        block(true);
        funct['(breakage)'] -= 1;
        funct['(loopage)'] -= 1;
        return this;
    }).labelled = true;

    reserve('with');

    blockstmt('switch', function () {
        var t = nexttoken,
            g = false;
        funct['(breakage)'] += 1;
        advance('(');
        nonadjacent(this, t);
        nospace();
        this.condition = parse(20);
        advance(')', t);
        nospace(prevtoken, token);
        nonadjacent(token, nexttoken);
        t = nexttoken;
        advance('{');
        nonadjacent(token, nexttoken);
        indent += option.indent;
        this.cases = [];
        for (;;) {
            switch (nexttoken.id) {
            case 'case':
                switch (funct['(verb)']) {
                case 'break':
                case 'case':
                case 'continue':
                case 'return':
                case 'switch':
                case 'throw':
                    break;
                default:
                    warning(
                        "Expected a 'break' statement before 'case'.",
                        token);
                }
                indentation(-option.indent);
                advance('case');
                this.cases.push(parse(20));
                g = true;
                advance(':');
                funct['(verb)'] = 'case';
                break;
            case 'default':
                switch (funct['(verb)']) {
                case 'break':
                case 'continue':
                case 'return':
                case 'throw':
                    break;
                default:
                    warning(
                        "Expected a 'break' statement before 'default'.",
                        token);
                }
                indentation(-option.indent);
                advance('default');
                g = true;
                advance(':');
                break;
            case '}':
                indent -= option.indent;
                indentation();
                advance('}', t);
                if (this.cases.length === 1 || this.condition.id === 'true' ||
                        this.condition.id === 'false') {
                    warning("This 'switch' should be an 'if'.", this);
                }
                funct['(breakage)'] -= 1;
                funct['(verb)'] = undefined;
                return;
            case '(end)':
                error("Missing '{a}'.", nexttoken, '}');
                return;
            default:
                if (g) {
                    switch (token.id) {
                    case ',':
                        error("Each value should have its own case label.");
                        return;
                    case ':':
                        statements();
                        break;
                    default:
                        error("Missing ':' on a case clause.", token);
                    }
                } else {
                    error("Expected '{a}' and instead saw '{b}'.",
                        nexttoken, 'case', nexttoken.value);
                }
            }
        }
    }).labelled = true;

    stmt('debugger', function () {
        if (!option.debug) {
            warning("All 'debugger' statements should be removed.");
        }
        return this;
    }).exps = true;

    (function () {
        var x = stmt('do', function () {
            funct['(breakage)'] += 1;
            funct['(loopage)'] += 1;
            this.first = block(true);
            advance('while');
            var t = nexttoken;
            nonadjacent(token, t);
            advance('(');
            nospace();
            parse(20);
            if (nexttoken.id === '=') {
                warning("Expected a conditional expression and instead saw an assignment.");
                advance('=');
                parse(20);
            }
            advance(')', t);
            nospace(prevtoken, token);
            funct['(breakage)'] -= 1;
            funct['(loopage)'] -= 1;
            return this;
        });
        x.labelled = true;
        x.exps = true;
    }());

    blockstmt('for', function () {
        var f = option.forin, s, t = nexttoken;
        funct['(breakage)'] += 1;
        funct['(loopage)'] += 1;
        advance('(');
        nonadjacent(this, t);
        nospace();
        if (peek(nexttoken.id === 'var' ? 1 : 0).id === 'in') {
            if (nexttoken.id === 'var') {
                advance('var');
                varstatement(true);
            } else {
                switch (funct[nexttoken.value]) {
                case 'unused':
                    funct[nexttoken.value] = 'var';
                    break;
                case 'var':
                    break;
                default:
                    warning("Bad for in variable '{a}'.",
                            nexttoken, nexttoken.value);
                }
                advance();
            }
            advance('in');
            parse(20);
            advance(')', t);
            s = block(true);
            if (!f && (s.length > 1 || typeof s[0] !== 'object' ||
                    s[0].value !== 'if')) {
                warning("The body of a for in should be wrapped in an if statement to filter unwanted properties from the prototype.", this);
            }
            funct['(breakage)'] -= 1;
            funct['(loopage)'] -= 1;
            return this;
        } else {
            if (nexttoken.id !== ';') {
                if (nexttoken.id === 'var') {
                    advance('var');
                    varstatement();
                } else {
                    for (;;) {
                        parse(0, 'for');
                        if (nexttoken.id !== ',') {
                            break;
                        }
                        comma();
                    }
                }
            }
            nolinebreak(token);
            advance(';');
            if (nexttoken.id !== ';') {
                parse(20);
                if (nexttoken.id === '=') {
                    warning("Expected a conditional expression and instead saw an assignment.");
                    advance('=');
                    parse(20);
                }
            }
            nolinebreak(token);
            advance(';');
            if (nexttoken.id === ';') {
                error("Expected '{a}' and instead saw '{b}'.",
                        nexttoken, ')', ';');
            }
            if (nexttoken.id !== ')') {
                for (;;) {
                    parse(0, 'for');
                    if (nexttoken.id !== ',') {
                        break;
                    }
                    comma();
                }
            }
            advance(')', t);
            nospace(prevtoken, token);
            block(true);
            funct['(breakage)'] -= 1;
            funct['(loopage)'] -= 1;
            return this;
        }
    }).labelled = true;


    stmt('break', function () {
        var v = nexttoken.value;
        if (funct['(breakage)'] === 0) {
            warning("Unexpected '{a}'.", nexttoken, this.value);
        }
        nolinebreak(this);
        if (nexttoken.id !== ';') {
            if (token.line === nexttoken.line) {
                if (funct[v] !== 'label') {
                    warning("'{a}' is not a statement label.", nexttoken, v);
                } else if (scope[v] !== funct) {
                    warning("'{a}' is out of scope.", nexttoken, v);
                }
                this.first = nexttoken;
                advance();
            }
        }
        reachable('break');
        return this;
    }).exps = true;


    stmt('continue', function () {
        var v = nexttoken.value;
        if (funct['(breakage)'] === 0) {
            warning("Unexpected '{a}'.", nexttoken, this.value);
        }
        nolinebreak(this);
        if (nexttoken.id !== ';') {
            if (token.line === nexttoken.line) {
                if (funct[v] !== 'label') {
                    warning("'{a}' is not a statement label.", nexttoken, v);
                } else if (scope[v] !== funct) {
                    warning("'{a}' is out of scope.", nexttoken, v);
                }
                this.first = nexttoken;
                advance();
            }
        } else if (!funct['(loopage)']) {
            warning("Unexpected '{a}'.", nexttoken, this.value);
        }
        reachable('continue');
        return this;
    }).exps = true;


    stmt('return', function () {
        nolinebreak(this);
        if (nexttoken.id === '(regexp)') {
            warning("Wrap the /regexp/ literal in parens to disambiguate the slash operator.");
        }
        if (nexttoken.id !== ';' && !nexttoken.reach) {
            nonadjacent(token, nexttoken);
            this.first = parse(20);
        }
        reachable('return');
        return this;
    }).exps = true;


    stmt('throw', function () {
        nolinebreak(this);
        nonadjacent(token, nexttoken);
        this.first = parse(20);
        reachable('throw');
        return this;
    }).exps = true;

    reserve('void');

//  Superfluous reserved words

    reserve('class');
    reserve('const');
    reserve('enum');
    reserve('export');
    reserve('extends');
    reserve('import');
    reserve('super');

    reserve('let');
    reserve('yield');
    reserve('implements');
    reserve('interface');
    reserve('package');
    reserve('private');
    reserve('protected');
    reserve('public');
    reserve('static');


// Parse JSON

    function jsonValue() {

        function jsonObject() {
            var o = {}, t = nexttoken;
            advance('{');
            if (nexttoken.id !== '}') {
                for (;;) {
                    if (nexttoken.id === '(end)') {
                        error("Missing '}' to match '{' from line {a}.",
                                nexttoken, t.line);
                    } else if (nexttoken.id === '}') {
                        warning("Unexpected comma.", token);
                        break;
                    } else if (nexttoken.id === ',') {
                        error("Unexpected comma.", nexttoken);
                    } else if (nexttoken.id !== '(string)') {
                        warning("Expected a string and instead saw {a}.",
                                nexttoken, nexttoken.value);
                    }
                    if (o[nexttoken.value] === true) {
                        warning("Duplicate key '{a}'.",
                                nexttoken, nexttoken.value);
                    } else if (nexttoken.value === '__proto__') {
                        warning("Stupid key '{a}'.",
                                nexttoken, nexttoken.value);
                    } else {
                        o[nexttoken.value] = true;
                    }
                    advance();
                    advance(':');
                    jsonValue();
                    if (nexttoken.id !== ',') {
                        break;
                    }
                    advance(',');
                }
            }
            advance('}');
        }

        function jsonArray() {
            var t = nexttoken;
            advance('[');
            if (nexttoken.id !== ']') {
                for (;;) {
                    if (nexttoken.id === '(end)') {
                        error("Missing ']' to match '[' from line {a}.",
                                nexttoken, t.line);
                    } else if (nexttoken.id === ']') {
                        warning("Unexpected comma.", token);
                        break;
                    } else if (nexttoken.id === ',') {
                        error("Unexpected comma.", nexttoken);
                    }
                    jsonValue();
                    if (nexttoken.id !== ',') {
                        break;
                    }
                    advance(',');
                }
            }
            advance(']');
        }

        switch (nexttoken.id) {
        case '{':
            jsonObject();
            break;
        case '[':
            jsonArray();
            break;
        case 'true':
        case 'false':
        case 'null':
        case '(number)':
        case '(string)':
            advance();
            break;
        case '-':
            advance('-');
            if (token.character !== nexttoken.from) {
                warning("Unexpected space after '-'.", token);
            }
            adjacent(token, nexttoken);
            advance('(number)');
            break;
        default:
            error("Expected a JSON value.", nexttoken);
        }
    }


// The actual JSLINT function itself.

    var itself = function (s, o) {
        var a, i;
        JSLINT.errors = [];
        predefined = Object.create(standard);
        if (o) {
            a = o.predef;
            if (a instanceof Array) {
                for (i = 0; i < a.length; i += 1) {
                    predefined[a[i]] = true;
                }
            }
            if (o.adsafe) {
                o.safe = true;
            }
            if (o.safe) {
                o.browser =
                o.css     =
                o.debug   =
                o.devel   =
                o.evil    =
                o.forin   =
                o.on      =
                o.rhino   =
                o.windows =
                o.sub     =
                o.widget  = false;

                o.eqeqeq  =
                o.nomen   =
                o.safe    =
                o.strict  =
                o.undef   = true;

                predefined.Date =
                predefined['eval'] =
                predefined.Function =
                predefined.Object = null;

                predefined.ADSAFE =
                predefined.lib = false;
            }
            option = o;
        } else {
            option = {};
        }
        option.indent = option.indent || 4;
        option.maxerr = option.maxerr || 50;
        adsafe_id = '';
        adsafe_may = false;
        adsafe_went = false;
        approved = {};
        if (option.approved) {
            for (i = 0; i < option.approved.length; i += 1) {
                approved[option.approved[i]] = option.approved[i];
            }
        } else {
            approved.test = 'test';
        }
        tab = '';
        for (i = 0; i < option.indent; i += 1) {
            tab += ' ';
        }
        indent = 1;
        global = Object.create(predefined);
        scope = global;
        funct = {
            '(global)': true,
            '(name)': '(global)',
            '(scope)': scope,
            '(breakage)': 0,
            '(loopage)': 0
        };
        functions = [funct];
        ids = {};
        urls = [];
        src = false;
        xmode = false;
        stack = null;
        member = {};
        membersOnly = null;
        implied = {};
        inblock = false;
        lookahead = [];
        jsonmode = false;
        warnings = 0;
        lex.init(s);
        prereg = true;
        strict_mode = false;

        prevtoken = token = nexttoken = syntax['(begin)'];
        assume();

        try {
            advance();
            if (nexttoken.value.charAt(0) === '<') {
                html();
                if (option.adsafe && !adsafe_went) {
                    warning("ADsafe violation: Missing ADSAFE.go.", this);
                }
            } else {
                switch (nexttoken.id) {
                case '{':
                case '[':
                    option.laxbreak = true;
                    jsonmode = true;
                    jsonValue();
                    break;
                case '@':
                case '*':
                case '#':
                case '.':
                case ':':
                    xmode = 'style';
                    advance();
                    if (token.id !== '@' || !nexttoken.identifier ||
                            nexttoken.value !== 'charset' || token.line !== 1 ||
                            token.from !== 1) {
                        error("A css file should begin with @charset 'UTF-8';");
                    }
                    advance();
                    if (nexttoken.type !== '(string)' &&
                            nexttoken.value !== 'UTF-8') {
                        error("A css file should begin with @charset 'UTF-8';");
                    }
                    advance();
                    advance(';');
                    styles();
                    break;

                default:
                    if (option.adsafe && option.fragment) {
                        error("Expected '{a}' and instead saw '{b}'.",
                            nexttoken, '<div>', nexttoken.value);
                    }
                    statements('lib');
                }
            }
            advance('(end)');
        } catch (e) {
            if (e) {
                JSLINT.errors.push({
                    reason    : e.message,
                    line      : e.line || nexttoken.line,
                    character : e.character || nexttoken.from
                }, null);
            }
        }
        return JSLINT.errors.length === 0;
    };

    function is_array(o) {
        return Object.prototype.toString.apply(o) === '[object Array]';
    }

    function to_array(o) {
        var a = [], k;
        for (k in o) {
            if (is_own(o, k)) {
                a.push(k);
            }
        }
        return a;
    }


// Data summary.

    itself.data = function () {

        var data = {functions: []}, fu, globals, implieds = [], f, i, j,
            members = [], n, unused = [], v;
        if (itself.errors.length) {
            data.errors = itself.errors;
        }

        if (jsonmode) {
            data.json = true;
        }

        for (n in implied) {
            if (is_own(implied, n)) {
                implieds.push({
                    name: n,
                    line: implied[n]
                });
            }
        }
        if (implieds.length > 0) {
            data.implieds = implieds;
        }

        if (urls.length > 0) {
            data.urls = urls;
        }

        globals = to_array(scope);
        if (globals.length > 0) {
            data.globals = globals;
        }

        for (i = 1; i < functions.length; i += 1) {
            f = functions[i];
            fu = {};
            for (j = 0; j < functionicity.length; j += 1) {
                fu[functionicity[j]] = [];
            }
            for (n in f) {
                if (is_own(f, n) && n.charAt(0) !== '(') {
                    v = f[n];
                    if (v === 'unction') {
                        v = 'unused';
                    }
                    if (is_array(fu[v])) {
                        fu[v].push(n);
                        if (v === 'unused') {
                            unused.push({
                                name: n,
                                line: f['(line)'],
                                'function': f['(name)']
                            });
                        }
                    }
                }
            }
            for (j = 0; j < functionicity.length; j += 1) {
                if (fu[functionicity[j]].length === 0) {
                    delete fu[functionicity[j]];
                }
            }
            fu.name = f['(name)'];
            fu.param = f['(params)'];
            fu.line = f['(line)'];
            fu.last = f['(last)'];
            data.functions.push(fu);
        }

        if (unused.length > 0) {
            data.unused = unused;
        }

        members = [];
        for (n in member) {
            if (typeof member[n] === 'number') {
                data.member = member;
                break;
            }
        }

        return data;
    };

    itself.report = function (option) {
        var data = itself.data();

        var a = [], c, e, err, f, i, k, l, m = '', n, o = [], s;

        function detail(h, array) {
            var b, i, singularity;
            if (array) {
                o.push('<div><i>' + h + '</i> ');
                array = array.sort();
                for (i = 0; i < array.length; i += 1) {
                    if (array[i] !== singularity) {
                        singularity = array[i];
                        o.push((b ? ', ' : '') + singularity);
                        b = true;
                    }
                }
                o.push('</div>');
            }
        }


        if (data.errors || data.implieds || data.unused) {
            err = true;
            o.push('<div id=errors><i>Error:</i>');
            if (data.errors) {
                for (i = 0; i < data.errors.length; i += 1) {
                    c = data.errors[i];
                    if (c) {
                        e = c.evidence || '';
                        o.push('<p>Problem' + (isFinite(c.line) ? ' at line ' +
                                c.line + ' character ' + c.character : '') +
                                ': ' + c.reason.entityify() +
                                '</p><p class=evidence>' +
                                (e && (e.length > 80 ? e.slice(0, 77) + '...' :
                                e).entityify()) + '</p>');
                    }
                }
            }

            if (data.implieds) {
                s = [];
                for (i = 0; i < data.implieds.length; i += 1) {
                    s[i] = '<code>' + data.implieds[i].name + '</code>&nbsp;<i>' +
                        data.implieds[i].line + '</i>';
                }
                o.push('<p><i>Implied global:</i> ' + s.join(', ') + '</p>');
            }

            if (data.unused) {
                s = [];
                for (i = 0; i < data.unused.length; i += 1) {
                    s[i] = '<code><u>' + data.unused[i].name + '</u></code>&nbsp;<i>' +
                        data.unused[i].line + '</i> <code>' +
                        data.unused[i]['function'] + '</code>';
                }
                o.push('<p><i>Unused variable:</i> ' + s.join(', ') + '</p>');
            }
            if (data.json) {
                o.push('<p>JSON: bad.</p>');
            }
            o.push('</div>');
        }

        if (!option) {

            o.push('<br><div id=functions>');

            if (data.urls) {
                detail("URLs<br>", data.urls, '<br>');
            }

            if (xmode === 'style') {
                o.push('<p>CSS.</p>');
            } else if (data.json && !err) {
                o.push('<p>JSON: good.</p>');
            } else if (data.globals) {
                o.push('<div><i>Global</i> ' +
                        data.globals.sort().join(', ') + '</div>');
            } else {
                o.push('<div><i>No new global variables introduced.</i></div>');
            }

            for (i = 0; i < data.functions.length; i += 1) {
                f = data.functions[i];

                o.push('<br><div class=function><i>' + f.line + '-' +
                        f.last + '</i> ' + (f.name || '') + '(' +
                        (f.param ? f.param.join(', ') : '') + ')</div>');
                detail('<big><b>Unused</b></big>', f.unused);
                detail('Closure', f.closure);
                detail('Variable', f['var']);
                detail('Exception', f.exception);
                detail('Outer', f.outer);
                detail('Global', f.global);
                detail('Label', f.label);
            }

            if (data.member) {
                a = to_array(data.member);
                if (a.length) {
                    a = a.sort();
                    m = '<br><pre id=members>/*members ';
                    l = 10;
                    for (i = 0; i < a.length; i += 1) {
                        k = a[i];
                        n = k.name();
                        if (l + n.length > 72) {
                            o.push(m + '<br>');
                            m = '    ';
                            l = 1;
                        }
                        l += n.length + 2;
                        if (data.member[k] === 1) {
                            n = '<i>' + n + '</i>';
                        }
                        if (i < a.length - 1) {
                            n += ', ';
                        }
                        m += n;
                    }
                    o.push(m + '<br>*/</pre>');
                }
                o.push('</div>');
            }
        }
        return o.join('');
    };
    itself.jslint = itself;

    itself.edition = '2010-11-27';

    return itself;

}());
